2251270639 has 2 divisors, whose sum is σ = 2251270640. Its totient is φ = 2251270638.

The previous prime is 2251270607. The next prime is 2251270673. The reversal of 2251270639 is 9360721522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2251270639 - 2⁵ = 2251270607 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2251270598 and 2251270607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2251270739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125635319 + 1125635320.

It is an arithmetic number, because the mean of its divisors is an integer number (1125635320).

Almost surely, 2^2251270639 is an apocalyptic number.

2251270639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251270639 is an equidigital number, since it uses as much as digits as its factorization.

2251270639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 2251270639 is about 47447.5567231865. The cubic root of 2251270639 is about 1310.6173185540.

The spelling of 2251270639 in words is "two billion, two hundred fifty-one million, two hundred seventy thousand, six hundred thirty-nine".