2250037981 has 2 divisors, whose sum is σ = 2250037982. Its totient is φ = 2250037980.

The previous prime is 2250037943. The next prime is 2250038017. The reversal of 2250037981 is 1897300522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1170324100 + 1079713881 = 34210^2 + 32859^2 .

It is a cyclic number.

It is not a de Polignac number, because 2250037981 - 2⁹ = 2250037469 is a prime.

It is a super-2 number, since 2×2250037981² = 10125341831885112722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2250037981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2250037681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125018990 + 1125018991.

It is an arithmetic number, because the mean of its divisors is an integer number (1125018991).

Almost surely, 2^2250037981 is an apocalyptic number.

It is an amenable number.

2250037981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2250037981 is an equidigital number, since it uses as much as digits as its factorization.

2250037981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 2250037981 is about 47434.5652557289. The cubic root of 2250037981 is about 1310.3780702762.

The spelling of 2250037981 in words is "two billion, two hundred fifty million, thirty-seven thousand, nine hundred eighty-one".