189824434 has 4 divisors (see below), whose sum is σ = 284736654. Its totient is φ = 94912216.

The previous prime is 189824413. The next prime is 189824447. The reversal of 189824434 is 434428981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 112296409 + 77528025 = 10597^2 + 8805^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47456107 + ... + 47456110.

Almost surely, 2^189824434 is an apocalyptic number.

189824434 is a deficient number, since it is larger than the sum of its proper divisors (94912220).

189824434 is an equidigital number, since it uses as much as digits as its factorization.

189824434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94912219.

The product of its digits is 221184, while the sum is 43.

The square root of 189824434 is about 13777.6788320820. The cubic root of 189824434 is about 574.7125812449.

The spelling of 189824434 in words is "one hundred eighty-nine million, eight hundred twenty-four thousand, four hundred thirty-four".