189907368 has 64 divisors (see below), whose sum is σ = 545496960. Its totient is φ = 53968896.

The previous prime is 189907363. The next prime is 189907373. The reversal of 189907368 is 863709981.

It is an interprime number because it is at equal distance from previous prime (189907363) and next prime (189907373).

It is a self number, because there is not a number n which added to its sum of digits gives 189907368.

It is not an unprimeable number, because it can be changed into a prime (189907363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29496 + ... + 35352.

It is an arithmetic number, because the mean of its divisors is an integer number (8523390).

Almost surely, 2^189907368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189907368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272748480).

189907368 is an abundant number, since it is smaller than the sum of its proper divisors (355589592).

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

189907368 is a wasteful number, since it uses less digits than its factorization.

189907368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6066 (or 6062 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 189907368 is about 13780.6882266453. The cubic root of 189907368 is about 574.7962660698.

The spelling of 189907368 in words is "one hundred eighty-nine million, nine hundred seven thousand, three hundred sixty-eight".