219240198188 has 24 divisors (see below), whose sum is σ = 424796481984. Its totient is φ = 98167251600.

The previous prime is 219240198173. The next prime is 219240198197. The reversal of 219240198188 is 881891042912.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

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, 37181618 + ... + 37187513.

It is an arithmetic number, because the mean of its divisors is an integer number (17699853416).

Almost surely, 2^219240198188 is an apocalyptic number.

It is an amenable number.

219240198188 is a deficient number, since it is larger than the sum of its proper divisors (205556283796).

219240198188 is a wasteful number, since it uses less digits than its factorization.

219240198188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74369213 (or 74369211 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 53.

The spelling of 219240198188 in words is "two hundred nineteen billion, two hundred forty million, one hundred ninety-eight thousand, one hundred eighty-eight".