189494836 has 6 divisors (see below), whose sum is σ = 331615970. Its totient is φ = 94747416.

The previous prime is 189494831. The next prime is 189494857. The reversal of 189494836 is 638494981.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 97219600 + 92275236 = 9860^2 + 9606^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189494831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23686851 + ... + 23686858.

Almost surely, 2^189494836 is an apocalyptic number.

It is an amenable number.

189494836 is a deficient number, since it is larger than the sum of its proper divisors (142121134).

189494836 is a wasteful number, since it uses less digits than its factorization.

189494836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47373713 (or 47373711 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 52.

The square root of 189494836 is about 13765.7123317321. The cubic root of 189494836 is about 574.3797581663.

The spelling of 189494836 in words is "one hundred eighty-nine million, four hundred ninety-four thousand, eight hundred thirty-six".