18172062137 has 8 divisors (see below), whose sum is σ = 19370620800. Its totient is φ = 16997716944.

The previous prime is 18172062133. The next prime is 18172062149. The reversal of 18172062137 is 73126027181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18172062137 - 2² = 18172062133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18172062137.

It is not an unprimeable number, because it can be changed into a prime (18172062131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6051818 + ... + 6054819.

It is an arithmetic number, because the mean of its divisors is an integer number (2421327600).

Almost surely, 2^18172062137 is an apocalyptic number.

It is an amenable number.

18172062137 is a deficient number, since it is larger than the sum of its proper divisors (1198558663).

18172062137 is a wasteful number, since it uses less digits than its factorization.

18172062137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12106735.

The product of its (nonzero) digits is 28224, while the sum is 38.

The spelling of 18172062137 in words is "eighteen billion, one hundred seventy-two million, sixty-two thousand, one hundred thirty-seven".