2651331249 has 18 divisors (see below), whose sum is σ = 4454958690. Its totient is φ = 1515046176.

The previous prime is 2651331239. The next prime is 2651331251. The reversal of 2651331249 is 9421331562.

It can be written as a sum of positive squares in only one way, i.e., 2363418225 + 287913024 = 48615^2 + 16968^2 .

It is not a de Polignac number, because 2651331249 - 2²⁴ = 2634554033 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2651331239) 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 17 ways as a sum of consecutive naturals, for example, 3005604 + ... + 3006485.

It is an arithmetic number, because the mean of its divisors is an integer number (247497705).

Almost surely, 2^2651331249 is an apocalyptic number.

It is an amenable number.

2651331249 is a deficient number, since it is larger than the sum of its proper divisors (1803627441).

2651331249 is a wasteful number, since it uses less digits than its factorization.

2651331249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6012109 (or 6012099 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 2651331249 is about 51491.0793147706. The cubic root of 2651331249 is about 1384.0591905101.

The spelling of 2651331249 in words is "two billion, six hundred fifty-one million, three hundred thirty-one thousand, two hundred forty-nine".