189633345 has 32 divisors (see below), whose sum is σ = 333452160. Its totient is φ = 91261440.

The previous prime is 189633329. The next prime is 189633347. The reversal of 189633345 is 543336981.

It is not a de Polignac number, because 189633345 - 2⁴ = 189633329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 189633297 and 189633306.

It is not an unprimeable number, because it can be changed into a prime (189633347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18411 + ... + 26799.

It is an arithmetic number, because the mean of its divisors is an integer number (10420380).

Almost surely, 2^189633345 is an apocalyptic number.

189633345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189633345 is a deficient number, since it is larger than the sum of its proper divisors (143818815).

189633345 is a wasteful number, since it uses less digits than its factorization.

189633345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8545.

The product of its digits is 233280, while the sum is 42.

The square root of 189633345 is about 13770.7423547171. The cubic root of 189633345 is about 574.5196694374.

It can be divided in two parts, 1896333 and 45, that added together give a triangular number (1896378 = T₁₉₄₇).

The spelling of 189633345 in words is "one hundred eighty-nine million, six hundred thirty-three thousand, three hundred forty-five".