45188971189 has 4 divisors (see below), whose sum is σ = 46291141260. Its totient is φ = 44086801120.

The previous prime is 45188971123. The next prime is 45188971241. The reversal of 45188971189 is 98117988154.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10767590289 + 34421380900 = 103767^2 + 185530^2 .

It is a cyclic number.

It is not a de Polignac number, because 45188971189 - 2¹³ = 45188962997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45188971109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551084974 + ... + 551085055.

It is an arithmetic number, because the mean of its divisors is an integer number (11572785315).

Almost surely, 2^45188971189 is an apocalyptic number.

It is an amenable number.

45188971189 is a deficient number, since it is larger than the sum of its proper divisors (1102170071).

45188971189 is a wasteful number, since it uses less digits than its factorization.

45188971189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102170070.

The product of its digits is 5806080, while the sum is 61.

The spelling of 45188971189 in words is "forty-five billion, one hundred eighty-eight million, nine hundred seventy-one thousand, one hundred eighty-nine".