189879764 has 24 divisors (see below), whose sum is σ = 337841280. Its totient is φ = 93364544.

The previous prime is 189879727. The next prime is 189879793. The reversal of 189879764 is 467978981.

189879764 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 78152 + ... + 80544.

It is an arithmetic number, because the mean of its divisors is an integer number (14076720).

Almost surely, 2^189879764 is an apocalyptic number.

It is an amenable number.

189879764 is a deficient number, since it is larger than the sum of its proper divisors (147961516).

189879764 is a wasteful number, since it uses less digits than its factorization.

189879764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2719 (or 2717 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 59.

The square root of 189879764 is about 13779.6866437521. The cubic root of 189879764 is about 574.7684148686.

The spelling of 189879764 in words is "one hundred eighty-nine million, eight hundred seventy-nine thousand, seven hundred sixty-four".