189898964 has 12 divisors (see below), whose sum is σ = 332421600. Its totient is φ = 94921368.

The previous prime is 189898949. The next prime is 189898967. The reversal of 189898964 is 469898981.

It is a junction number, because it is equal to n+sod(n) for n = 189898897 and 189898906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189898967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18347 + ... + 26765.

It is an arithmetic number, because the mean of its divisors is an integer number (27701800).

Almost surely, 2^189898964 is an apocalyptic number.

It is an amenable number.

189898964 is a deficient number, since it is larger than the sum of its proper divisors (142522636).

189898964 is a wasteful number, since it uses less digits than its factorization.

189898964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14062 (or 14060 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 62.

The square root of 189898964 is about 13780.3833038127. The cubic root of 189898964 is about 574.7877870955.

The spelling of 189898964 in words is "one hundred eighty-nine million, eight hundred ninety-eight thousand, nine hundred sixty-four".