189428607133848 has 48 divisors (see below), whose sum is σ = 513036545934120. Its totient is φ = 63142778589696.

The previous prime is 189428607133699. The next prime is 189428607133849. The reversal of 189428607133848 is 848331706824981.

It is a happy number.

189428607133848 is a `hidden beast` number, since 1 + 8 + 9 + 4 + 2 + 8 + 607 + 1 + 3 + 3 + 8 + 4 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189428607133849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65189115 + ... + 68032917.

Almost surely, 2^{189428607133848} is an apocalyptic number.

189428607133848 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

189428607133848 is an abundant number, since it is smaller than the sum of its proper divisors (323607938800272).

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

189428607133848 is a wasteful number, since it uses less digits than its factorization.

189428607133848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3768968 (or 3768961 counting only the distinct ones).

The product of its (nonzero) digits is 445906944, while the sum is 72.

The spelling of 189428607133848 in words is "one hundred eighty-nine trillion, four hundred twenty-eight billion, six hundred seven million, one hundred thirty-three thousand, eight hundred forty-eight".