2251468861 has 2 divisors, whose sum is σ = 2251468862. Its totient is φ = 2251468860.

The previous prime is 2251468789. The next prime is 2251468903. The reversal of 2251468861 is 1688641522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1456567225 + 794901636 = 38165^2 + 28194^2 .

It is a cyclic number.

It is not a de Polignac number, because 2251468861 - 2¹¹ = 2251466813 is a prime.

It is a super-2 number, since 2×2251468861² = 10138224064105274642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2251469861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125734430 + 1125734431.

It is an arithmetic number, because the mean of its divisors is an integer number (1125734431).

Almost surely, 2^2251468861 is an apocalyptic number.

It is an amenable number.

2251468861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251468861 is an equidigital number, since it uses as much as digits as its factorization.

2251468861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 184320, while the sum is 43.

The square root of 2251468861 is about 47449.6455308151. The cubic root of 2251468861 is about 1310.6557835816.

The spelling of 2251468861 in words is "two billion, two hundred fifty-one million, four hundred sixty-eight thousand, eight hundred sixty-one".