2251026709 has 2 divisors, whose sum is σ = 2251026710. Its totient is φ = 2251026708.

The previous prime is 2251026707. The next prime is 2251026727. The reversal of 2251026709 is 9076201522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2232562500 + 18464209 = 47250^2 + 4297^2 .

It is a cyclic number.

It is not a de Polignac number, because 2251026709 - 2¹ = 2251026707 is a prime.

Together with 2251026707, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2251026707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125513354 + 1125513355.

It is an arithmetic number, because the mean of its divisors is an integer number (1125513355).

Almost surely, 2^2251026709 is an apocalyptic number.

It is an amenable number.

2251026709 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251026709 is an equidigital number, since it uses as much as digits as its factorization.

2251026709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2251026709 is about 47444.9861313079. The cubic root of 2251026709 is about 1310.5699807789.

The spelling of 2251026709 in words is "two billion, two hundred fifty-one million, twenty-six thousand, seven hundred nine".