2400650981 has 2 divisors, whose sum is σ = 2400650982. Its totient is φ = 2400650980.

The previous prime is 2400650977. The next prime is 2400651017. The reversal of 2400650981 is 1890560042.

2400650981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2400118081 + 532900 = 48991^2 + 730^2 .

It is a cyclic number.

It is not a de Polignac number, because 2400650981 - 2² = 2400650977 is a prime.

It is a super-2 number, since 2×2400650981² = 11526250265152524722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2400650911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1200325490 + 1200325491.

It is an arithmetic number, because the mean of its divisors is an integer number (1200325491).

Almost surely, 2^2400650981 is an apocalyptic number.

It is an amenable number.

2400650981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2400650981 is an equidigital number, since it uses as much as digits as its factorization.

2400650981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 2400650981 is about 48996.4384521977. The cubic root of 2400650981 is about 1338.9869414799.

The spelling of 2400650981 in words is "two billion, four hundred million, six hundred fifty thousand, nine hundred eighty-one".