2192188985890 has 32 divisors (see below), whose sum is σ = 4088450887920. Its totient is φ = 845626005504.

The previous prime is 2192188985849. The next prime is 2192188985923. The reversal of 2192188985890 is 985898812912.

It can be written as a sum of positive squares in 8 ways, for example, as 1262609548281 + 929579437609 = 1123659^2 + 964147^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26174275 + ... + 26257894.

Almost surely, 2^{2192188985890} is an apocalyptic number.

2192188985890 is a deficient number, since it is larger than the sum of its proper divisors (1896261902030).

2192188985890 is a wasteful number, since it uses less digits than its factorization.

2192188985890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52432326.

The product of its (nonzero) digits is 59719680, while the sum is 70.

The spelling of 2192188985890 in words is "two trillion, one hundred ninety-two billion, one hundred eighty-eight million, nine hundred eighty-five thousand, eight hundred ninety".