18050904513 has 10 divisors (see below), whose sum is σ = 26964931554. Its totient is φ = 12033936288.

The previous prime is 18050904463. The next prime is 18050904541. The reversal of 18050904513 is 31540905081.

18050904513 is a `hidden beast` number, since 1 + 8 + 0 + 50 + 90 + 4 + 513 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18048041649 + 2862864 = 134343^2 + 1692^2 .

It is not a de Polignac number, because 18050904513 - 2¹⁰ = 18050903489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18050904713) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 111425256 + ... + 111425417.

Almost surely, 2^18050904513 is an apocalyptic number.

It is an amenable number.

18050904513 is a deficient number, since it is larger than the sum of its proper divisors (8914027041).

18050904513 is an equidigital number, since it uses as much as digits as its factorization.

18050904513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222850685 (or 222850676 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 18050904513 in words is "eighteen billion, fifty million, nine hundred four thousand, five hundred thirteen".