189626838 has 16 divisors (see below), whose sum is σ = 379566000. Its totient is φ = 63156896.

The previous prime is 189626831. The next prime is 189626869. The reversal of 189626838 is 838626981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189626831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4713 + ... + 20036.

It is an arithmetic number, because the mean of its divisors is an integer number (23722875).

Almost surely, 2^189626838 is an apocalyptic number.

189626838 is an abundant number, since it is smaller than the sum of its proper divisors (189939162).

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

189626838 is a wasteful number, since it uses less digits than its factorization.

189626838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26031.

The product of its digits is 995328, while the sum is 51.

The square root of 189626838 is about 13770.5060909176. The cubic root of 189626838 is about 574.5130980856.

The spelling of 189626838 in words is "one hundred eighty-nine million, six hundred twenty-six thousand, eight hundred thirty-eight".