198945559074 has 32 divisors (see below), whose sum is σ = 408734804736. Its totient is φ = 64508693760.

The previous prime is 198945559073. The next prime is 198945559093. The reversal of 198945559074 is 470955549891.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 198945558996 and 198945559014.

It is not an unprimeable number, because it can be changed into a prime (198945559073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 937639 + ... + 1130069.

It is an arithmetic number, because the mean of its divisors is an integer number (12772962648).

Almost surely, 2^198945559074 is an apocalyptic number.

198945559074 is an abundant number, since it is smaller than the sum of its proper divisors (209789245662).

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

198945559074 is a wasteful number, since it uses less digits than its factorization.

198945559074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197130.

The product of its (nonzero) digits is 81648000, while the sum is 66.

The spelling of 198945559074 in words is "one hundred ninety-eight billion, nine hundred forty-five million, five hundred fifty-nine thousand, seventy-four".