18701668337 has 16 divisors (see below), whose sum is σ = 20719632384. Its totient is φ = 16738722000.

The previous prime is 18701668319. The next prime is 18701668357. The reversal of 18701668337 is 73386610781.

It is not a de Polignac number, because 18701668337 - 2³⁰ = 17627926513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18701668357) 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, 131912 + ... + 234102.

It is an arithmetic number, because the mean of its divisors is an integer number (1294977024).

Almost surely, 2^18701668337 is an apocalyptic number.

It is an amenable number.

18701668337 is a deficient number, since it is larger than the sum of its proper divisors (2017964047).

18701668337 is a wasteful number, since it uses less digits than its factorization.

18701668337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102460.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 18701668337 in words is "eighteen billion, seven hundred one million, six hundred sixty-eight thousand, three hundred thirty-seven".