197439812964 has 81 divisors (see below), whose sum is σ = 504678406323. Its totient is φ = 65083661424.

The previous prime is 197439812959. The next prime is 197439812971. The reversal of 197439812964 is 469218934791.

The square root of 197439812964 is 444342.

It is a perfect power (a square), and thus also a powerful number.

197439812964 is a `hidden beast` number, since 19 + 7 + 439 + 8 + 129 + 64 = 666.

197439812964 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 274602997 + ... + 274603715.

Almost surely, 2^197439812964 is an apocalyptic number.

197439812964 is the 444342-nd square number.

It is an amenable number.

197439812964 is an abundant number, since it is smaller than the sum of its proper divisors (307238593359).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197439812964 is an equidigital number, since it uses as much as digits as its factorization.

197439812964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654 (or 827 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 63.

The spelling of 197439812964 in words is "one hundred ninety-seven billion, four hundred thirty-nine million, eight hundred twelve thousand, nine hundred sixty-four".