2445266981 has 2 divisors, whose sum is σ = 2445266982. Its totient is φ = 2445266980.

The previous prime is 2445266917. The next prime is 2445267023. The reversal of 2445266981 is 1896625442.

2445266981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1425742081 + 1019524900 = 37759^2 + 31930^2 .

It is a cyclic number.

It is not a de Polignac number, because 2445266981 - 2⁶ = 2445266917 is a prime.

It is a super-2 number, since 2×2445266981² = 11958661216737708722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2445266581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1222633490 + 1222633491.

It is an arithmetic number, because the mean of its divisors is an integer number (1222633491).

Almost surely, 2^2445266981 is an apocalyptic number.

It is an amenable number.

2445266981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2445266981 is an equidigital number, since it uses as much as digits as its factorization.

2445266981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 829440, while the sum is 47.

The square root of 2445266981 is about 49449.6408581498. The cubic root of 2445266981 is about 1347.2310839139.

The spelling of 2445266981 in words is "two billion, four hundred forty-five million, two hundred sixty-six thousand, nine hundred eighty-one".