189153984 has 28 divisors (see below), whose sum is σ = 500470424. Its totient is φ = 63051264.

The previous prime is 189153983. The next prime is 189153989. The reversal of 189153984 is 489351981.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (189153983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492397 + ... + 492780.

Almost surely, 2^189153984 is an apocalyptic number.

It is an amenable number.

189153984 is an abundant number, since it is smaller than the sum of its proper divisors (311316440).

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

189153984 is an equidigital number, since it uses as much as digits as its factorization.

189153984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985192 (or 985182 counting only the distinct ones).

The product of its digits is 311040, while the sum is 48.

The square root of 189153984 is about 13753.3262885747. The cubic root of 189153984 is about 574.0351647976.

The spelling of 189153984 in words is "one hundred eighty-nine million, one hundred fifty-three thousand, nine hundred eighty-four".