2153331993 has 16 divisors (see below), whose sum is σ = 2910310400. Its totient is φ = 1415990160.

The previous prime is 2153331989. The next prime is 2153332033. The reversal of 2153331993 is 3991333512.

It is not a de Polignac number, because 2153331993 - 2² = 2153331989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2153331913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273648 + ... + 281406.

It is an arithmetic number, because the mean of its divisors is an integer number (181894400).

Almost surely, 2^2153331993 is an apocalyptic number.

It is an amenable number.

2153331993 is a deficient number, since it is larger than the sum of its proper divisors (756978407).

2153331993 is a wasteful number, since it uses less digits than its factorization.

2153331993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9012.

The product of its digits is 65610, while the sum is 39.

The square root of 2153331993 is about 46404.0083721223. The cubic root of 2153331993 is about 1291.3292775761.

The spelling of 2153331993 in words is "two billion, one hundred fifty-three million, three hundred thirty-one thousand, nine hundred ninety-three".