189156500 has 48 divisors (see below), whose sum is σ = 444911376. Its totient is φ = 69840000.

The previous prime is 189156497. The next prime is 189156503. The reversal of 189156500 is 5651981.

It is an interprime number because it is at equal distance from previous prime (189156497) and next prime (189156503).

It can be written as a sum of positive squares in 8 ways, for example, as 157301764 + 31854736 = 12542^2 + 5644^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189156503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8051 + ... + 21050.

It is an arithmetic number, because the mean of its divisors is an integer number (9268987).

Almost surely, 2^189156500 is an apocalyptic number.

189156500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189156500 is an abundant number, since it is smaller than the sum of its proper divisors (255754876).

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

189156500 is a wasteful number, since it uses less digits than its factorization.

189156500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29133 (or 29121 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 35.

The square root of 189156500 is about 13753.4177570522. The cubic root of 189156500 is about 574.0377099305.

The spelling of 189156500 in words is "one hundred eighty-nine million, one hundred fifty-six thousand, five hundred".