218957833922 has 4 divisors (see below), whose sum is σ = 328436750886. Its totient is φ = 109478916960.

The previous prime is 218957833891. The next prime is 218957833931. The reversal of 218957833922 is 229338759812.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 185475787561 + 33482046361 = 430669^2 + 182981^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54739458479 + ... + 54739458482.

Almost surely, 2^218957833922 is an apocalyptic number.

218957833922 is a deficient number, since it is larger than the sum of its proper divisors (109478916964).

218957833922 is a wasteful number, since it uses less digits than its factorization.

218957833922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109478916963.

The product of its digits is 13063680, while the sum is 59.

The spelling of 218957833922 in words is "two hundred eighteen billion, nine hundred fifty-seven million, eight hundred thirty-three thousand, nine hundred twenty-two".