2153942113 has 4 divisors (see below), whose sum is σ = 2154146068. Its totient is φ = 2153738160.

The previous prime is 2153942071. The next prime is 2153942117. The reversal of 2153942113 is 3112493512.

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 417303184 + 1736638929 = 20428^2 + 41673^2 .

It is a cyclic number.

It is not a de Polignac number, because 2153942113 - 2¹³ = 2153933921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2153942117) 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, 85218 + ... + 107563.

It is an arithmetic number, because the mean of its divisors is an integer number (538536517).

Almost surely, 2^2153942113 is an apocalyptic number.

It is an amenable number.

2153942113 is a deficient number, since it is larger than the sum of its proper divisors (203955).

2153942113 is a wasteful number, since it uses less digits than its factorization.

2153942113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203954.

The product of its digits is 6480, while the sum is 31.

The square root of 2153942113 is about 46410.5819075779. The cubic root of 2153942113 is about 1291.4512267882.

The spelling of 2153942113 in words is "two billion, one hundred fifty-three million, nine hundred forty-two thousand, one hundred thirteen".