189949436 has 12 divisors (see below), whose sum is σ = 332864112. Its totient is φ = 94845408.

The previous prime is 189949429. The next prime is 189949457. The reversal of 189949436 is 634949981.

It is a congruent number.

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, 28985 + ... + 34928.

It is an arithmetic number, because the mean of its divisors is an integer number (27738676).

Almost surely, 2^189949436 is an apocalyptic number.

It is an amenable number.

189949436 is a deficient number, since it is larger than the sum of its proper divisors (142914676).

189949436 is a wasteful number, since it uses less digits than its factorization.

189949436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64660 (or 64658 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 53.

The square root of 189949436 is about 13782.2144809896. The cubic root of 189949436 is about 574.8387056099.

The spelling of 189949436 in words is "one hundred eighty-nine million, nine hundred forty-nine thousand, four hundred thirty-six".