18180953879 has 16 divisors (see below), whose sum is σ = 19958580096. Its totient is φ = 16424272800.

The previous prime is 18180953867. The next prime is 18180953891. The reversal of 18180953879 is 97835908181.

It is an interprime number because it is at equal distance from previous prime (18180953867) and next prime (18180953891).

It is a cyclic number.

It is not a de Polignac number, because 18180953879 - 2⁴ = 18180953863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18180953839) 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, 3475664 + ... + 3480890.

It is an arithmetic number, because the mean of its divisors is an integer number (1247411256).

Almost surely, 2^18180953879 is an apocalyptic number.

18180953879 is a deficient number, since it is larger than the sum of its proper divisors (1777626217).

18180953879 is a wasteful number, since it uses less digits than its factorization.

18180953879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7166.

The product of its (nonzero) digits is 4354560, while the sum is 59.

The spelling of 18180953879 in words is "eighteen billion, one hundred eighty million, nine hundred fifty-three thousand, eight hundred seventy-nine".