10091018538 has 24 divisors (see below), whose sum is σ = 21941691876. Its totient is φ = 3351700800.

The previous prime is 10091018527. The next prime is 10091018657. The reversal of 10091018538 is 83581019001.

10091018538 is a `hidden beast` number, since 10 + 0 + 9 + 101 + 8 + 538 = 666.

10091018538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8655139089 + 1435879449 = 93033^2 + 37893^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 992473 + ... + 1002588.

Almost surely, 2^10091018538 is an apocalyptic number.

10091018538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10091018538 is an abundant number, since it is smaller than the sum of its proper divisors (11850673338).

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

10091018538 is a wasteful number, since it uses less digits than its factorization.

10091018538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995350 (or 1995347 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 36.

The spelling of 10091018538 in words is "ten billion, ninety-one million, eighteen thousand, five hundred thirty-eight".