2113997249 has 24 divisors (see below), whose sum is σ = 2666197800. Its totient is φ = 1661313024.

The previous prime is 2113997227. The next prime is 2113997267. The reversal of 2113997249 is 9427993112.

It can be written as a sum of positive squares in 4 ways, for example, as 305026225 + 1808971024 = 17465^2 + 42532^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2113997249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2113997219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83777 + ... + 106049.

It is an arithmetic number, because the mean of its divisors is an integer number (111091575).

Almost surely, 2^2113997249 is an apocalyptic number.

It is an amenable number.

2113997249 is a deficient number, since it is larger than the sum of its proper divisors (552200551).

2113997249 is a wasteful number, since it uses less digits than its factorization.

2113997249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22449 (or 22442 counting only the distinct ones).

The product of its digits is 244944, while the sum is 47.

The square root of 2113997249 is about 45978.2258139655. The cubic root of 2113997249 is about 1283.4180392207.

The spelling of 2113997249 in words is "two billion, one hundred thirteen million, nine hundred ninety-seven thousand, two hundred forty-nine".