189811914 has 16 divisors (see below), whose sum is σ = 382614528. Its totient is φ = 62772192.

The previous prime is 189811913. The next prime is 189811927. The reversal of 189811914 is 419118981.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (189811913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123787 + ... + 125310.

It is an arithmetic number, because the mean of its divisors is an integer number (23913408).

Almost surely, 2^189811914 is an apocalyptic number.

189811914 is an abundant number, since it is smaller than the sum of its proper divisors (192802614).

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

189811914 is a wasteful number, since it uses less digits than its factorization.

189811914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249229.

The product of its digits is 20736, while the sum is 42.

The square root of 189811914 is about 13777.2244664882. The cubic root of 189811914 is about 574.6999457804.

The spelling of 189811914 in words is "one hundred eighty-nine million, eight hundred eleven thousand, nine hundred fourteen".