198400364164 has 12 divisors (see below), whose sum is σ = 347536753564. Its totient is φ = 99104148864.

The previous prime is 198400364119. The next prime is 198400364191. The reversal of 198400364164 is 461463004891.

It can be written as a sum of positive squares in 2 ways, for example, as 169315790400 + 29084573764 = 411480^2 + 170542^2 .

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24003657 + ... + 24011920.

Almost surely, 2^198400364164 is an apocalyptic number.

It is an amenable number.

198400364164 is a deficient number, since it is larger than the sum of its proper divisors (149136389400).

198400364164 is a wasteful number, since it uses less digits than its factorization.

198400364164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48016614 (or 48016612 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 198400364164 in words is "one hundred ninety-eight billion, four hundred million, three hundred sixty-four thousand, one hundred sixty-four".