189456490756 has 27 divisors (see below), whose sum is σ = 359035891263. Its totient is φ = 87436234080.

The previous prime is 189456490723. The next prime is 189456490759. The reversal of 189456490756 is 657094654981.

The square root of 189456490756 is 435266.

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

It can be written as a sum of positive squares in 4 ways, for example, as 10710180100 + 178746310656 = 103490^2 + 422784^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189456490759) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11308546 + ... + 11325286.

Almost surely, 2^189456490756 is an apocalyptic number.

189456490756 is the 435266-th square number.

It is an amenable number.

189456490756 is a deficient number, since it is larger than the sum of its proper divisors (169579400507).

189456490756 is an frugal number, since it uses more digits than its factorization.

189456490756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33512 (or 16756 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 64.

Multiplying 189456490756 by its sum of digits (64), we get a square (12125215408384 = 3482128²).

The spelling of 189456490756 in words is "one hundred eighty-nine billion, four hundred fifty-six million, four hundred ninety thousand, seven hundred fifty-six".