189963472 has 20 divisors (see below), whose sum is σ = 375886656. Its totient is φ = 92960480.

The previous prime is 189963437. The next prime is 189963497. The reversal of 189963472 is 274369981.

It is a super-2 number, since 2×189963472² = 72172241388589568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125554 + ... + 127057.

Almost surely, 2^189963472 is an apocalyptic number.

It is an amenable number.

189963472 is a deficient number, since it is larger than the sum of its proper divisors (185923184).

189963472 is a wasteful number, since it uses less digits than its factorization.

189963472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252666 (or 252660 counting only the distinct ones).

The product of its digits is 653184, while the sum is 49.

The square root of 189963472 is about 13782.7236785767. The cubic root of 189963472 is about 574.8528641802.

The spelling of 189963472 in words is "one hundred eighty-nine million, nine hundred sixty-three thousand, four hundred seventy-two".