2169955745 has 16 divisors (see below), whose sum is σ = 2649205440. Its totient is φ = 1705848000.

The previous prime is 2169955729. The next prime is 2169955751. The reversal of 2169955745 is 5475599612.

It is not a de Polignac number, because 2169955745 - 2⁴ = 2169955729 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381170 + ... + 386820.

It is an arithmetic number, because the mean of its divisors is an integer number (165575340).

Almost surely, 2^2169955745 is an apocalyptic number.

It is an amenable number.

2169955745 is a deficient number, since it is larger than the sum of its proper divisors (479249695).

2169955745 is a wasteful number, since it uses less digits than its factorization.

2169955745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6976.

The product of its digits is 3402000, while the sum is 53.

The square root of 2169955745 is about 46582.7837832820. The cubic root of 2169955745 is about 1294.6437892682.

The spelling of 2169955745 in words is "two billion, one hundred sixty-nine million, nine hundred fifty-five thousand, seven hundred forty-five".