189630801 has 20 divisors (see below), whose sum is σ = 299941092. Its totient is φ = 118983168.

The previous prime is 189630769. The next prime is 189630803. The reversal of 189630801 is 108036981.

189630801 is a `hidden beast` number, since 18 + 9 + 630 + 8 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 85100625 + 104530176 = 9225^2 + 10224^2 .

It is not a de Polignac number, because 189630801 - 2⁵ = 189630769 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189630803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 67480 + ... + 70233.

Almost surely, 2^189630801 is an apocalyptic number.

It is an amenable number.

189630801 is a deficient number, since it is larger than the sum of its proper divisors (110310291).

189630801 is a wasteful number, since it uses less digits than its factorization.

189630801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137742 (or 137733 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 189630801 is about 13770.6499846594. The cubic root of 189630801 is about 574.5171002961.

The spelling of 189630801 in words is "one hundred eighty-nine million, six hundred thirty thousand, eight hundred one".