189663976045 has 8 divisors (see below), whose sum is σ = 235444935960. Its totient is φ = 146499071040.

The previous prime is 189663976003. The next prime is 189663976081. The reversal of 189663976045 is 540679366981.

189663976045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 24192380521 + 165471595524 = 155539^2 + 406782^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189663976045 - 2¹³ = 189663967853 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 654013566 + ... + 654013855.

It is an arithmetic number, because the mean of its divisors is an integer number (29430616995).

Almost surely, 2^189663976045 is an apocalyptic number.

It is an amenable number.

189663976045 is a deficient number, since it is larger than the sum of its proper divisors (45780959915).

189663976045 is a wasteful number, since it uses less digits than its factorization.

189663976045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308027455.

The product of its (nonzero) digits is 58786560, while the sum is 64.

The spelling of 189663976045 in words is "one hundred eighty-nine billion, six hundred sixty-three million, nine hundred seventy-six thousand, forty-five".