190889562778 has 16 divisors (see below), whose sum is σ = 289144327680. Its totient is φ = 94508312976.

The previous prime is 190889562757. The next prime is 190889562779. The reversal of 190889562778 is 877265988091.

It is not an unprimeable number, because it can be changed into a prime (190889562779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2191768 + ... + 2277196.

It is an arithmetic number, because the mean of its divisors is an integer number (18071520480).

Almost surely, 2^190889562778 is an apocalyptic number.

190889562778 is a deficient number, since it is larger than the sum of its proper divisors (98254764902).

190889562778 is a wasteful number, since it uses less digits than its factorization.

190889562778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96381.

The product of its (nonzero) digits is 121927680, while the sum is 70.

The spelling of 190889562778 in words is "one hundred ninety billion, eight hundred eighty-nine million, five hundred sixty-two thousand, seven hundred seventy-eight".