197918438344 has 64 divisors (see below), whose sum is σ = 429007622400. Its totient is φ = 84742156800.

The previous prime is 197918438329. The next prime is 197918438351. The reversal of 197918438344 is 443834819791.

197918438344 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 841152 + ... + 1050415.

It is an arithmetic number, because the mean of its divisors is an integer number (6703244100).

Almost surely, 2^197918438344 is an apocalyptic number.

It is an amenable number.

197918438344 is an abundant number, since it is smaller than the sum of its proper divisors (231089184056).

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

197918438344 is a wasteful number, since it uses less digits than its factorization.

197918438344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891654 (or 1891650 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 61.

The spelling of 197918438344 in words is "one hundred ninety-seven billion, nine hundred eighteen million, four hundred thirty-eight thousand, three hundred forty-four".