198632445124 has 9 divisors (see below), whose sum is σ = 347608338861. Its totient is φ = 99315776880.

The previous prime is 198632445091. The next prime is 198632445133. The reversal of 198632445124 is 421544236891.

The square root of 198632445124 is 445682.

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

It can be written as a sum of positive squares in only one way, i.e., 108055523524 + 90576921600 = 328718^2 + 300960^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 779944 + ... + 1002784.

Almost surely, 2^198632445124 is an apocalyptic number.

198632445124 is the 445682-nd square number.

It is an amenable number.

198632445124 is a deficient number, since it is larger than the sum of its proper divisors (148975893737).

198632445124 is an frugal number, since it uses more digits than its factorization.

198632445124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445686 (or 222843 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 49.

Multiplying 198632445124 by its sum of digits (49), we get a square (9732989811076 = 3119774²).

The spelling of 198632445124 in words is "one hundred ninety-eight billion, six hundred thirty-two million, four hundred forty-five thousand, one hundred twenty-four".