189886436 has 12 divisors (see below), whose sum is σ = 346749312. Its totient is φ = 90815208.

The previous prime is 189886429. The next prime is 189886441. The reversal of 189886436 is 634688981.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1031900 + ... + 1032083.

It is an arithmetic number, because the mean of its divisors is an integer number (28895776).

Almost surely, 2^189886436 is an apocalyptic number.

It is an amenable number.

189886436 is a deficient number, since it is larger than the sum of its proper divisors (156862876).

189886436 is a wasteful number, since it uses less digits than its factorization.

189886436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064010 (or 2064008 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 53.

The square root of 189886436 is about 13779.9287371162. The cubic root of 189886436 is about 574.7751468655.

The spelling of 189886436 in words is "one hundred eighty-nine million, eight hundred eighty-six thousand, four hundred thirty-six".