189143648 has 24 divisors (see below), whose sum is σ = 384390720. Its totient is φ = 91520640.

The previous prime is 189143641. The next prime is 189143659. The reversal of 189143648 is 846341981.

It is a junction number, because it is equal to n+sod(n) for n = 189143599 and 189143608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189143641) 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 3 ways as a sum of consecutive naturals, for example, 94343 + ... + 96326.

It is an arithmetic number, because the mean of its divisors is an integer number (16016280).

Almost surely, 2^189143648 is an apocalyptic number.

It is an amenable number.

189143648 is an abundant number, since it is smaller than the sum of its proper divisors (195247072).

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

189143648 is a wasteful number, since it uses less digits than its factorization.

189143648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190710 (or 190702 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The square root of 189143648 is about 13752.9505197976. The cubic root of 189143648 is about 574.0247088798.

The spelling of 189143648 in words is "one hundred eighty-nine million, one hundred forty-three thousand, six hundred forty-eight".