189634455 has 24 divisors (see below), whose sum is σ = 333610992. Its totient is φ = 99627264.

The previous prime is 189634411. The next prime is 189634457. The reversal of 189634455 is 554436981.

189634455 is a `hidden beast` number, since 1 + 8 + 9 + 634 + 4 + 5 + 5 = 666.

It is not a de Polignac number, because 189634455 - 2⁸ = 189634199 is a prime.

It is a super-2 number, since 2×189634455² = 71922453046294050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 189634455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189634457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28434 + ... + 34463.

It is an arithmetic number, because the mean of its divisors is an integer number (13900458).

Almost surely, 2^189634455 is an apocalyptic number.

189634455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

189634455 is a deficient number, since it is larger than the sum of its proper divisors (143976537).

189634455 is a wasteful number, since it uses less digits than its factorization.

189634455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62975 (or 62972 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 189634455 is about 13770.7826574963. The cubic root of 189634455 is about 574.5207903999.

The spelling of 189634455 in words is "one hundred eighty-nine million, six hundred thirty-four thousand, four hundred fifty-five".