189709038 has 24 divisors (see below), whose sum is σ = 411290568. Its totient is φ = 63197232.

The previous prime is 189709019. The next prime is 189709049. The reversal of 189709038 is 830907981.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 189708984 and 189709002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51556 + ... + 55112.

It is an arithmetic number, because the mean of its divisors is an integer number (17137107).

Almost surely, 2^189709038 is an apocalyptic number.

189709038 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

189709038 is an abundant number, since it is smaller than the sum of its proper divisors (221581530).

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

189709038 is a wasteful number, since it uses less digits than its factorization.

189709038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6528 (or 6525 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 189709038 is about 13773.4904073005. The cubic root of 189709038 is about 574.5960999699.

The spelling of 189709038 in words is "one hundred eighty-nine million, seven hundred nine thousand, thirty-eight".