189136896 has 144 divisors (see below), whose sum is σ = 557840304. Its totient is φ = 56623104.

The previous prime is 189136891. The next prime is 189136901. The reversal of 189136896 is 698631981.

It is an interprime number because it is at equal distance from previous prime (189136891) and next prime (189136901).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189136891) 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, 5111790 + ... + 5111826.

It is an arithmetic number, because the mean of its divisors is an integer number (3873891).

Almost surely, 2^189136896 is an apocalyptic number.

189136896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189136896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278920152).

189136896 is an abundant number, since it is smaller than the sum of its proper divisors (368703408).

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

189136896 is an frugal number, since it uses more digits than its factorization.

189136896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 55 counting only the distinct ones).

The product of its digits is 559872, while the sum is 51.

The square root of 189136896 is about 13752.7050430088. The cubic root of 189136896 is about 574.0178783377.

The spelling of 189136896 in words is "one hundred eighty-nine million, one hundred thirty-six thousand, eight hundred ninety-six".