197924764920 has 32 divisors (see below), whose sum is σ = 593774295120. Its totient is φ = 52779937280.

The previous prime is 197924764913. The next prime is 197924764937. The reversal of 197924764920 is 29467429791.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

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, 824686401 + ... + 824686640.

Almost surely, 2^197924764920 is an apocalyptic number.

197924764920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197924764920 is an abundant number, since it is smaller than the sum of its proper divisors (395849530200).

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

197924764920 is a wasteful number, since it uses less digits than its factorization.

197924764920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649373055 (or 1649373051 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 60.

The spelling of 197924764920 in words is "one hundred ninety-seven billion, nine hundred twenty-four million, seven hundred sixty-four thousand, nine hundred twenty".