189455672 has 16 divisors (see below), whose sum is σ = 405976560. Its totient is φ = 81195264.

The previous prime is 189455641. The next prime is 189455677. The reversal of 189455672 is 276554981.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189455677) 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, 1691513 + ... + 1691624.

It is an arithmetic number, because the mean of its divisors is an integer number (25373535).

Almost surely, 2^189455672 is an apocalyptic number.

It is an amenable number.

189455672 is an abundant number, since it is smaller than the sum of its proper divisors (216520888).

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

189455672 is a wasteful number, since it uses less digits than its factorization.

189455672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3383150 (or 3383146 counting only the distinct ones).

The product of its digits is 604800, while the sum is 47.

The square root of 189455672 is about 13764.2897383047. The cubic root of 189455672 is about 574.3401853047.

The spelling of 189455672 in words is "one hundred eighty-nine million, four hundred fifty-five thousand, six hundred seventy-two".