2249865831 has 4 divisors (see below), whose sum is σ = 2999821112. Its totient is φ = 1499910552.

The previous prime is 2249865803. The next prime is 2249865841. The reversal of 2249865831 is 1385689422.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-2249865831 is a prime.

It is a super-2 number, since 2×2249865831² = 10123792515002641122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2249865841) 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, 374977636 + ... + 374977641.

It is an arithmetic number, because the mean of its divisors is an integer number (749955278).

Almost surely, 2^2249865831 is an apocalyptic number.

2249865831 is a deficient number, since it is larger than the sum of its proper divisors (749955281).

2249865831 is an equidigital number, since it uses as much as digits as its factorization.

2249865831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749955280.

The product of its digits is 829440, while the sum is 48.

The square root of 2249865831 is about 47432.7506160037. The cubic root of 2249865831 is about 1310.3446504940.

The spelling of 2249865831 in words is "two billion, two hundred forty-nine million, eight hundred sixty-five thousand, eight hundred thirty-one".