189495838 has 32 divisors (see below), whose sum is σ = 351000000. Its totient is φ = 76430592.

The previous prime is 189495767. The next prime is 189495841. The reversal of 189495838 is 838594981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3538 + ... + 19786.

It is an arithmetic number, because the mean of its divisors is an integer number (10968750).

Almost surely, 2^189495838 is an apocalyptic number.

189495838 is a deficient number, since it is larger than the sum of its proper divisors (161504162).

189495838 is a wasteful number, since it uses less digits than its factorization.

189495838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16289 (or 16275 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 55.

The square root of 189495838 is about 13765.7487264587. The cubic root of 189495838 is about 574.3807705554.

The spelling of 189495838 in words is "one hundred eighty-nine million, four hundred ninety-five thousand, eight hundred thirty-eight".