2251370639 has 16 divisors (see below), whose sum is σ = 2790801216. Its totient is φ = 1771929600.

The previous prime is 2251370621. The next prime is 2251370689. The reversal of 2251370639 is 9360731522.

It is not a de Polignac number, because 2251370639 - 2⁸ = 2251370383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251370689) 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, 225842 + ... + 235599.

It is an arithmetic number, because the mean of its divisors is an integer number (174425076).

Almost surely, 2^2251370639 is an apocalyptic number.

2251370639 is a deficient number, since it is larger than the sum of its proper divisors (539430577).

2251370639 is a wasteful number, since it uses less digits than its factorization.

2251370639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461506.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 2251370639 is about 47448.6105065259. The cubic root of 2251370639 is about 1310.6367238607.

The spelling of 2251370639 in words is "two billion, two hundred fifty-one million, three hundred seventy thousand, six hundred thirty-nine".