18692881379 has 16 divisors (see below), whose sum is σ = 19723253760. Its totient is φ = 17681664000.

The previous prime is 18692881373. The next prime is 18692881391. The reversal of 18692881379 is 97318829681.

It is a de Polignac number, because none of the positive numbers 2^k-18692881379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18692881373) 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, 810254 + ... + 833004.

It is an arithmetic number, because the mean of its divisors is an integer number (1232703360).

Almost surely, 2^18692881379 is an apocalyptic number.

18692881379 is a deficient number, since it is larger than the sum of its proper divisors (1030372381).

18692881379 is a wasteful number, since it uses less digits than its factorization.

18692881379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23170.

The product of its digits is 10450944, while the sum is 62.

The spelling of 18692881379 in words is "eighteen billion, six hundred ninety-two million, eight hundred eighty-one thousand, three hundred seventy-nine".