189475642944 has 189 divisors, whose sum is σ = 632010660411. Its totient is φ = 54115004160.

The previous prime is 189475642859. The next prime is 189475642987. The reversal of 189475642944 is 449246574981.

The square root of 189475642944 is 435288.

It is a perfect power (a square), and thus also a powerful number.

189475642944 is a `hidden beast` number, since 1 + 8 + 9 + 4 + 7 + 564 + 29 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 73127089 + ... + 73129679.

Almost surely, 2^189475642944 is an apocalyptic number.

189475642944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

189475642944 is the 435288-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189475642944

189475642944 is an abundant number, since it is smaller than the sum of its proper divisors (442535017467).

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

189475642944 is an frugal number, since it uses more digits than its factorization.

189475642944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5214 (or 2603 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 63.

The spelling of 189475642944 in words is "one hundred eighty-nine billion, four hundred seventy-five million, six hundred forty-two thousand, nine hundred forty-four".