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9380508981 = 319467352399
BaseRepresentation
bin10001011110001111…
…10011010100110101
3220012202002020012120
420233013303110311
5123202402241411
64150452510153
7451313003454
oct105707632465
926182066176
109380508981
113a84064268
12199961b359
13b6655903c
1464db84b9b
1539d7e0106
hex22f1f3535

9380508981 has 16 divisors (see below), whose sum is σ = 13193856000. Its totient is φ = 5911828848.

The previous prime is 9380508971. The next prime is 9380509001. The reversal of 9380508981 is 1898050839.

It is not a de Polignac number, because 9380508981 - 231 = 7233025333 is a prime.

It is a super-2 number, since 2×93805089812 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9380508961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149581 + ... + 202818.

It is an arithmetic number, because the mean of its divisors is an integer number (824616000).

Almost surely, 29380508981 is an apocalyptic number.

It is an amenable number.

9380508981 is a deficient number, since it is larger than the sum of its proper divisors (3813347019).

9380508981 is a wasteful number, since it uses less digits than its factorization.

9380508981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352888.

The product of its (nonzero) digits is 622080, while the sum is 51.

The square root of 9380508981 is about 96853.0277327457. The cubic root of 9380508981 is about 2108.9946005611.

The spelling of 9380508981 in words is "nine billion, three hundred eighty million, five hundred eight thousand, nine hundred eighty-one".

Divisors: 1 3 19 57 467 1401 8873 26619 352399 1057197 6695581 20086743 164570333 493710999 3126836327 9380508981