90485180931 has 16 divisors (see below), whose sum is σ = 121208747264. Its totient is φ = 60042989664.

The previous prime is 90485180861. The next prime is 90485180939. The reversal of 90485180931 is 13908158409.

It is not a de Polignac number, because 90485180931 - 2¹⁹ = 90484656643 is a prime.

It is a super-2 number, since 2×90485180931² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90485180939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 747276 + ... + 859878.

It is an arithmetic number, because the mean of its divisors is an integer number (7575546704).

Almost surely, 2^90485180931 is an apocalyptic number.

90485180931 is a deficient number, since it is larger than the sum of its proper divisors (30723566333).

90485180931 is a wasteful number, since it uses less digits than its factorization.

90485180931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113850.

The product of its (nonzero) digits is 311040, while the sum is 48.

The spelling of 90485180931 in words is "ninety billion, four hundred eighty-five million, one hundred eighty thousand, nine hundred thirty-one".