189145152 has 224 divisors, whose sum is σ = 669747200. Its totient is φ = 51134976.

The previous prime is 189145141. The next prime is 189145153. The reversal of 189145152 is 251541981.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (189145153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229413 + ... + 230235.

Almost surely, 2^189145152 is an apocalyptic number.

189145152 is a gapful number since it is divisible by the number (12) 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 189145152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334873600).

189145152 is an abundant number, since it is smaller than the sum of its proper divisors (480602048).

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

189145152 is a wasteful number, since it uses less digits than its factorization.

189145152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870 (or 854 counting only the distinct ones).

The product of its digits is 14400, while the sum is 36.

The square root of 189145152 is about 13753.0051988647. The cubic root of 189145152 is about 574.0262303528.

The spelling of 189145152 in words is "one hundred eighty-nine million, one hundred forty-five thousand, one hundred fifty-two".