189515764 has 6 divisors (see below), whose sum is σ = 331652594. Its totient is φ = 94757880.

The previous prime is 189515737. The next prime is 189515789. The reversal of 189515764 is 467515981.

It can be written as a sum of positive squares in only one way, i.e., 187470864 + 2044900 = 13692^2 + 1430^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23689467 + ... + 23689474.

Almost surely, 2^189515764 is an apocalyptic number.

It is an amenable number.

189515764 is a deficient number, since it is larger than the sum of its proper divisors (142136830).

189515764 is a wasteful number, since it uses less digits than its factorization.

189515764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47378945 (or 47378943 counting only the distinct ones).

The product of its digits is 302400, while the sum is 46.

The square root of 189515764 is about 13766.4724602928. The cubic root of 189515764 is about 574.4009024137.

The spelling of 189515764 in words is "one hundred eighty-nine million, five hundred fifteen thousand, seven hundred sixty-four".