189625816 has 8 divisors (see below), whose sum is σ = 355548420. Its totient is φ = 94812904.

The previous prime is 189625811. The next prime is 189625841. The reversal of 189625816 is 618526981.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189625811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11851606 + ... + 11851621.

Almost surely, 2^189625816 is an apocalyptic number.

It is an amenable number.

189625816 is a deficient number, since it is larger than the sum of its proper divisors (165922604).

189625816 is a wasteful number, since it uses less digits than its factorization.

189625816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23703233 (or 23703229 counting only the distinct ones).

The product of its digits is 207360, while the sum is 46.

The square root of 189625816 is about 13770.4689825728. The cubic root of 189625816 is about 574.5120659648.

The spelling of 189625816 in words is "one hundred eighty-nine million, six hundred twenty-five thousand, eight hundred sixteen".