189308398 has 16 divisors (see below), whose sum is σ = 292834080. Its totient is φ = 91728000.

The previous prime is 189308393. The next prime is 189308407. The reversal of 189308398 is 893803981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189308393) 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, 4738 + ... + 20026.

It is an arithmetic number, because the mean of its divisors is an integer number (18302130).

Almost surely, 2^189308398 is an apocalyptic number.

189308398 is a deficient number, since it is larger than the sum of its proper divisors (103525682).

189308398 is a wasteful number, since it uses less digits than its factorization.

189308398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15483.

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 189308398 is about 13758.9388398960. The cubic root of 189308398 is about 574.1913249713.

The spelling of 189308398 in words is "one hundred eighty-nine million, three hundred eight thousand, three hundred ninety-eight".