189771108045 has 64 divisors (see below), whose sum is σ = 320893747200. Its totient is φ = 95501445120.

The previous prime is 189771107959. The next prime is 189771108073. The reversal of 189771108045 is 540801177981.

It is not a de Polignac number, because 189771108045 - 2¹³ = 189771099853 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 114112884 + ... + 114114546.

It is an arithmetic number, because the mean of its divisors is an integer number (5013964800).

Almost surely, 2^189771108045 is an apocalyptic number.

189771108045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189771108045 is a deficient number, since it is larger than the sum of its proper divisors (131122639155).

189771108045 is a wasteful number, since it uses less digits than its factorization.

189771108045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3050.

The product of its (nonzero) digits is 564480, while the sum is 51.

The spelling of 189771108045 in words is "one hundred eighty-nine billion, seven hundred seventy-one million, one hundred eight thousand, forty-five".