189386364 has 24 divisors (see below), whose sum is σ = 442305360. Its totient is φ = 63071104.

The previous prime is 189386333. The next prime is 189386369. The reversal of 189386364 is 463683981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189386369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7702 + ... + 20930.

It is an arithmetic number, because the mean of its divisors is an integer number (18429390).

Almost surely, 2^189386364 is an apocalyptic number.

It is an amenable number.

189386364 is an abundant number, since it is smaller than the sum of its proper divisors (252918996).

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

189386364 is a wasteful number, since it uses less digits than its factorization.

189386364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14429 (or 14427 counting only the distinct ones).

The product of its digits is 746496, while the sum is 48.

The square root of 189386364 is about 13761.7718335976. The cubic root of 189386364 is about 574.2701403804.

The spelling of 189386364 in words is "one hundred eighty-nine million, three hundred eighty-six thousand, three hundred sixty-four".