189122850 has 180 divisors, whose sum is σ = 611915634. Its totient is φ = 43182720.

The previous prime is 189122849. The next prime is 189122861. The reversal of 189122850 is 58221981.

It can be written as a sum of positive squares in 3 ways, for example, as 132917841 + 56205009 = 11529^2 + 7497^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 197974 + ... + 198926.

Almost surely, 2^189122850 is an apocalyptic number.

189122850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 189122850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305957817).

189122850 is an abundant number, since it is smaller than the sum of its proper divisors (422792784).

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

189122850 is a wasteful number, since it uses less digits than its factorization.

189122850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991 (or 970 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 189122850 is about 13752.1943703541. The cubic root of 189122850 is about 574.0036684279.

The spelling of 189122850 in words is "one hundred eighty-nine million, one hundred twenty-two thousand, eight hundred fifty".