18823871738 has 16 divisors (see below), whose sum is σ = 33672516480. Its totient is φ = 7716618096.

The previous prime is 18823871713. The next prime is 18823871747. The reversal of 18823871738 is 83717832881.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29229293 + ... + 29229936.

It is an arithmetic number, because the mean of its divisors is an integer number (2104532280).

Almost surely, 2^18823871738 is an apocalyptic number.

18823871738 is a deficient number, since it is larger than the sum of its proper divisors (14848644742).

18823871738 is a wasteful number, since it uses less digits than its factorization.

18823871738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58459261.

The product of its digits is 3612672, while the sum is 56.

The spelling of 18823871738 in words is "eighteen billion, eight hundred twenty-three million, eight hundred seventy-one thousand, seven hundred thirty-eight".