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18379504080 = 2432573193917
BaseRepresentation
bin10001000111100000…
…001111100111010000
31202102220021112202100
4101013200033213100
5300120123112310
612235440320400
71220314131000
oct210740174720
952386245670
1018379504080
1178818294a3
12368b313100
13196ba46b02
14c64db8000
1572886dec0
hex44780f9d0

18379504080 has 480 divisors, whose sum is σ = 75789792000. Its totient is φ = 3978906624.

The previous prime is 18379504057. The next prime is 18379504081. The reversal of 18379504080 is 8040597381.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18379504081) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4690282 + ... + 4694198.

It is an arithmetic number, because the mean of its divisors is an integer number (157895400).

Almost surely, 218379504080 is an apocalyptic number.

18379504080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18379504080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37894896000).

18379504080 is an abundant number, since it is smaller than the sum of its proper divisors (57410287920).

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

18379504080 is a wasteful number, since it uses less digits than its factorization.

18379504080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3976 (or 3953 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 18379504080 in words is "eighteen billion, three hundred seventy-nine million, five hundred four thousand, eighty".