189016398 has 24 divisors (see below), whose sum is σ = 414472968. Its totient is φ = 62245872.

The previous prime is 189016339. The next prime is 189016409. The reversal of 189016398 is 893610981.

189016398 is a `hidden beast` number, since 1 + 8 + 9 + 0 + 1 + 639 + 8 = 666.

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, 61765 + ... + 64752.

It is an arithmetic number, because the mean of its divisors is an integer number (17269707).

Almost surely, 2^189016398 is an apocalyptic number.

189016398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

189016398 is an abundant number, since it is smaller than the sum of its proper divisors (225456570).

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

189016398 is a wasteful number, since it uses less digits than its factorization.

189016398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126608 (or 126605 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 189016398 is about 13748.3234614261. The cubic root of 189016398 is about 573.8959513071.

The spelling of 189016398 in words is "one hundred eighty-nine million, sixteen thousand, three hundred ninety-eight".