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389139038190 = 233571979229599
BaseRepresentation
bin1011010100110100111…
…11100111111111101110
31101012102202202100022000
411222122133213333232
522333424043210230
6454433520033130
740054141151220
oct5523237477756
91335382670260
10389139038190
1114003a92a001
1263501a627a6
132a907475316
1414b97966410
15a1c8170b60
hex5a9a7e7fee

389139038190 has 512 divisors, whose sum is σ = 1271808000000. Its totient is φ = 82696453632.

The previous prime is 389139038149. The next prime is 389139038243. The reversal of 389139038190 is 91830931983.

389139038190 is a `hidden beast` number, since 3 + 8 + 91 + 3 + 90 + 381 + 90 = 666.

It is a super-2 number, since 2×3891390381902 (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 649647511 + ... + 649648109.

It is an arithmetic number, because the mean of its divisors is an integer number (2484000000).

Almost surely, 2389139038190 is an apocalyptic number.

389139038190 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 389139038190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (635904000000).

389139038190 is an abundant number, since it is smaller than the sum of its proper divisors (882668961810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389139038190 is a wasteful number, since it uses less digits than its factorization.

389139038190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949 (or 943 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The spelling of 389139038190 in words is "three hundred eighty-nine billion, one hundred thirty-nine million, thirty-eight thousand, one hundred ninety".