198453745938 has 16 divisors (see below), whose sum is σ = 453608562240. Its totient is φ = 56701070256.

The previous prime is 198453745901. The next prime is 198453746041. The reversal of 198453745938 is 839547354891.

It is a happy 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, 2362544553 + ... + 2362544636.

It is an arithmetic number, because the mean of its divisors is an integer number (28350535140).

Almost surely, 2^198453745938 is an apocalyptic number.

198453745938 is an abundant number, since it is smaller than the sum of its proper divisors (255154816302).

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

198453745938 is a wasteful number, since it uses less digits than its factorization.

198453745938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4725089201.

The product of its digits is 130636800, while the sum is 66.

The spelling of 198453745938 in words is "one hundred ninety-eight billion, four hundred fifty-three million, seven hundred forty-five thousand, nine hundred thirty-eight".