189571650 has 48 divisors (see below), whose sum is σ = 471157344. Its totient is φ = 50442880.

The previous prime is 189571643. The next prime is 189571651. The reversal of 189571650 is 56175981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189571651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86974 + ... + 89126.

It is an arithmetic number, because the mean of its divisors is an integer number (9815778).

Almost surely, 2^189571650 is an apocalyptic number.

189571650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189571650 is an abundant number, since it is smaller than the sum of its proper divisors (281585694).

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

189571650 is a wasteful number, since it uses less digits than its factorization.

189571650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2755 (or 2750 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 42.

The square root of 189571650 is about 13768.5020971782. The cubic root of 189571650 is about 574.4573582520.

The spelling of 189571650 in words is "one hundred eighty-nine million, five hundred seventy-one thousand, six hundred fifty".