2170391153 has 20 divisors (see below), whose sum is σ = 2562713328. Its totient is φ = 1837752840.

The previous prime is 2170391081. The next prime is 2170391183. The reversal of 2170391153 is 3511930712.

It is not a de Polignac number, because 2170391153 - 2¹⁰ = 2170390129 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2170391183) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 193838 + ... + 204728.

Almost surely, 2^2170391153 is an apocalyptic number.

It is an amenable number.

2170391153 is a deficient number, since it is larger than the sum of its proper divisors (392322175).

2170391153 is an frugal number, since it uses more digits than its factorization.

2170391153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11002 (or 10981 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 2170391153 is about 46587.4570351291. The cubic root of 2170391153 is about 1294.7303748382.

The spelling of 2170391153 in words is "two billion, one hundred seventy million, three hundred ninety-one thousand, one hundred fifty-three".