18130567508 has 6 divisors (see below), whose sum is σ = 31728493146. Its totient is φ = 9065283752.

The previous prime is 18130567453. The next prime is 18130567517. The reversal of 18130567508 is 80576503181.

It can be written as a sum of positive squares in only one way, i.e., 17568972304 + 561595204 = 132548^2 + 23698^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2266320935 + ... + 2266320942.

It is an arithmetic number, because the mean of its divisors is an integer number (5288082191).

Almost surely, 2^18130567508 is an apocalyptic number.

It is an amenable number.

18130567508 is a deficient number, since it is larger than the sum of its proper divisors (13597925638).

18130567508 is a wasteful number, since it uses less digits than its factorization.

18130567508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4532641881 (or 4532641879 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 44.

The spelling of 18130567508 in words is "eighteen billion, one hundred thirty million, five hundred sixty-seven thousand, five hundred eight".