189976716 has 18 divisors (see below), whose sum is σ = 480219012. Its totient is φ = 63325560.

The previous prime is 189976693. The next prime is 189976727. The reversal of 189976716 is 617679981.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2638530 + ... + 2638601.

It is an arithmetic number, because the mean of its divisors is an integer number (26678834).

Almost surely, 2^189976716 is an apocalyptic number.

It is an amenable number.

189976716 is an abundant number, since it is smaller than the sum of its proper divisors (290242296).

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

189976716 is a wasteful number, since it uses less digits than its factorization.

189976716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5277141 (or 5277136 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 54.

The square root of 189976716 is about 13783.2041267624. The cubic root of 189976716 is about 574.8662231948.

The spelling of 189976716 in words is "one hundred eighty-nine million, nine hundred seventy-six thousand, seven hundred sixteen".