189869688 has 48 divisors (see below), whose sum is σ = 526780800. Its totient is φ = 61745280.

The previous prime is 189869683. The next prime is 189869711. The reversal of 189869688 is 886968981.

189869688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189869683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29208 + ... + 35111.

It is an arithmetic number, because the mean of its divisors is an integer number (10974600).

Almost surely, 2^189869688 is an apocalyptic number.

189869688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

189869688 is an abundant number, since it is smaller than the sum of its proper divisors (336911112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189869688 is a wasteful number, since it uses less digits than its factorization.

189869688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64372 (or 64365 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 63.

The square root of 189869688 is about 13779.3210282655. The cubic root of 189869688 is about 574.7582479628.

The spelling of 189869688 in words is "one hundred eighty-nine million, eight hundred sixty-nine thousand, six hundred eighty-eight".