13091038490 has 16 divisors (see below), whose sum is σ = 23565761352. Its totient is φ = 5235994944.

The previous prime is 13091038481. The next prime is 13091038523. The reversal of 13091038490 is 9483019031.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6445038961 + 6645999529 = 80281^2 + 81523^2 .

It is a super-2 number, since 2×13091038490² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99032 + ... + 189708.

Almost surely, 2^13091038490 is an apocalyptic number.

13091038490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13091038490 is a deficient number, since it is larger than the sum of its proper divisors (10474722862).

13091038490 is a wasteful number, since it uses less digits than its factorization.

13091038490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105121.

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 13091038490 in words is "thirteen billion, ninety-one million, thirty-eight thousand, four hundred ninety".