2406586981 has 2 divisors, whose sum is σ = 2406586982. Its totient is φ = 2406586980.

The previous prime is 2406586979. The next prime is 2406586993. The reversal of 2406586981 is 1896856042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2372177025 + 34409956 = 48705^2 + 5866^2 .

It is a cyclic number.

It is not a de Polignac number, because 2406586981 - 2¹ = 2406586979 is a prime.

It is a super-2 number, since 2×2406586981² = 11583321794237388722, which contains 22 as substring.

Together with 2406586979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2406506981) 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, 1203293490 + 1203293491.

It is an arithmetic number, because the mean of its divisors is an integer number (1203293491).

Almost surely, 2^2406586981 is an apocalyptic number.

It is an amenable number.

2406586981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2406586981 is an equidigital number, since it uses as much as digits as its factorization.

2406586981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 829440, while the sum is 49.

The square root of 2406586981 is about 49056.9768840274. The cubic root of 2406586981 is about 1340.0896540965.

The spelling of 2406586981 in words is "two billion, four hundred six million, five hundred eighty-six thousand, nine hundred eighty-one".