189957060 has 144 divisors (see below), whose sum is σ = 616324800. Its totient is φ = 47215872.

The previous prime is 189957043. The next prime is 189957067. The reversal of 189957060 is 60759981.

189957060 is a `hidden beast` number, since 18 + 9 + 9 + 570 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 189956997 and 189957015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189957067) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 228726 + ... + 229554.

Almost surely, 2^189957060 is an apocalyptic number.

189957060 is a gapful number since it is divisible by the number (10) 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 189957060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308162400).

189957060 is an abundant number, since it is smaller than the sum of its proper divisors (426367740).

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

189957060 is a wasteful number, since it uses less digits than its factorization.

189957060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930 (or 925 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 189957060 is about 13782.4910665670. The cubic root of 189957060 is about 574.8463962735.

The spelling of 189957060 in words is "one hundred eighty-nine million, nine hundred fifty-seven thousand, sixty".