198446257146 has 16 divisors (see below), whose sum is σ = 409695499008. Its totient is φ = 64014921600.

The previous prime is 198446257129. The next prime is 198446257171. The reversal of 198446257146 is 641752644891.

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, 533457495 + ... + 533457866.

It is an arithmetic number, because the mean of its divisors is an integer number (25605968688).

Almost surely, 2^198446257146 is an apocalyptic number.

198446257146 is an abundant number, since it is smaller than the sum of its proper divisors (211249241862).

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

198446257146 is a wasteful number, since it uses less digits than its factorization.

198446257146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066915397.

The product of its digits is 11612160, while the sum is 57.

The spelling of 198446257146 in words is "one hundred ninety-eight billion, four hundred forty-six million, two hundred fifty-seven thousand, one hundred forty-six".