957218818 has 4 divisors (see below), whose sum is σ = 1435828230. Its totient is φ = 478609408.

The previous prime is 957218809. The next prime is 957218833. The reversal of 957218818 is 818812759.

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., 936543609 + 20675209 = 30603^2 + 4547^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239304703 + ... + 239304706.

Almost surely, 2^957218818 is an apocalyptic number.

957218818 is a deficient number, since it is larger than the sum of its proper divisors (478609412).

957218818 is a wasteful number, since it uses less digits than its factorization.

957218818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478609411.

The product of its digits is 322560, while the sum is 49.

The square root of 957218818 is about 30938.9530850674. The cubic root of 957218818 is about 985.5312715445.

The spelling of 957218818 in words is "nine hundred fifty-seven million, two hundred eighteen thousand, eight hundred eighteen".