189000835398 has 36 divisors (see below), whose sum is σ = 428080363620. Its totient is φ = 60261132888.

The previous prime is 189000835357. The next prime is 189000835409. The reversal of 189000835398 is 893538000981.

189000835398 is a `hidden beast` number, since 18 + 90 + 0 + 0 + 8 + 3 + 539 + 8 = 666.

It is a super-2 number, since 2×189000835398² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9914908 + ... + 9933951.

Almost surely, 2^189000835398 is an apocalyptic number.

189000835398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

189000835398 is an abundant number, since it is smaller than the sum of its proper divisors (239079528222).

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

189000835398 is a wasteful number, since it uses less digits than its factorization.

189000835398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19848913 (or 19848887 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 189000835398 in words is "one hundred eighty-nine billion, eight hundred thirty-five thousand, three hundred ninety-eight".