189291512 has 16 divisors (see below), whose sum is σ = 355128840. Its totient is φ = 94590496.

The previous prime is 189291511. The next prime is 189291517. The reversal of 189291512 is 215192981.

It is a happy number.

It is a super-2 number, since 2×189291512² = 71662553030492288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189291511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10118 + ... + 21930.

Almost surely, 2^189291512 is an apocalyptic number.

It is an amenable number.

189291512 is a deficient number, since it is larger than the sum of its proper divisors (165837328).

189291512 is a wasteful number, since it uses less digits than its factorization.

189291512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13822 (or 13818 counting only the distinct ones).

The product of its digits is 12960, while the sum is 38.

The square root of 189291512 is about 13758.3251887721. The cubic root of 189291512 is about 574.1742521542.

The spelling of 189291512 in words is "one hundred eighty-nine million, two hundred ninety-one thousand, five hundred twelve".