2153972369 has 8 divisors (see below), whose sum is σ = 2312800128. Its totient is φ = 1998713920.

The previous prime is 2153972363. The next prime is 2153972371. The reversal of 2153972369 is 9632793512.

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

It is a cyclic number.

It is not a de Polignac number, because 2153972369 - 2⁸ = 2153972113 is a prime.

It is a super-2 number, since 2×2153972369² = 9279193932830944322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2153972363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 891077 + ... + 893490.

It is an arithmetic number, because the mean of its divisors is an integer number (289100016).

Almost surely, 2^2153972369 is an apocalyptic number.

It is an amenable number.

2153972369 is a deficient number, since it is larger than the sum of its proper divisors (158827759).

2153972369 is a wasteful number, since it uses less digits than its factorization.

2153972369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784655.

The product of its digits is 612360, while the sum is 47.

The square root of 2153972369 is about 46410.9078665781. The cubic root of 2153972369 is about 1291.4572736801.

The spelling of 2153972369 in words is "two billion, one hundred fifty-three million, nine hundred seventy-two thousand, three hundred sixty-nine".