2402411981 has 2 divisors, whose sum is σ = 2402411982. Its totient is φ = 2402411980.

The previous prime is 2402411971. The next prime is 2402412007. The reversal of 2402411981 is 1891142042.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2111402500 + 291009481 = 45950^2 + 17059^2 .

It is a cyclic number.

It is not a de Polignac number, because 2402411981 - 2³⁰ = 1328670157 is a prime.

It is a super-2 number, since 2×2402411981² = 11543166652904688722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2402411911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1201205990 + 1201205991.

It is an arithmetic number, because the mean of its divisors is an integer number (1201205991).

Almost surely, 2^2402411981 is an apocalyptic number.

It is an amenable number.

2402411981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2402411981 is an equidigital number, since it uses as much as digits as its factorization.

2402411981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 2402411981 is about 49014.4058517493. The cubic root of 2402411981 is about 1339.3142665398.

The spelling of 2402411981 in words is "two billion, four hundred two million, four hundred eleven thousand, nine hundred eighty-one".