2915393481 has 216 divisors, whose sum is σ = 5994014208. Its totient is φ = 1334361600.

The previous prime is 2915393477. The next prime is 2915393561. The reversal of 2915393481 is 1843935192.

It is a happy number.

2915393481 is a `hidden beast` number, since 2 + 9 + 1 + 539 + 34 + 81 = 666.

It is not a de Polignac number, because 2915393481 - 2² = 2915393477 is a prime.

It is a super-2 number, since 2×2915393481² = 16999038298114594722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2915393401) 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 215 ways as a sum of consecutive naturals, for example, 39936861 + ... + 39936933.

Almost surely, 2^2915393481 is an apocalyptic number.

2915393481 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2915393481 is an abundant number, since it is smaller than the sum of its proper divisors (3078620727).

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

2915393481 is a wasteful number, since it uses less digits than its factorization.

2915393481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 138 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 2915393481 is about 53994.3837912796. The cubic root of 2915393481 is about 1428.5618875472.

The spelling of 2915393481 in words is "two billion, nine hundred fifteen million, three hundred ninety-three thousand, four hundred eighty-one".