2610439681 has 2 divisors, whose sum is σ = 2610439682. Its totient is φ = 2610439680.

The previous prime is 2610439679. The next prime is 2610439691. The reversal of 2610439681 is 1869340162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2574547600 + 35892081 = 50740^2 + 5991^2 .

It is a cyclic number.

It is not a de Polignac number, because 2610439681 - 2¹ = 2610439679 is a prime.

It is a super-2 number, since 2×2610439681² = 13628790656278763522, which contains 22 as substring.

Together with 2610439679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2610439691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1305219840 + 1305219841.

It is an arithmetic number, because the mean of its divisors is an integer number (1305219841).

Almost surely, 2^2610439681 is an apocalyptic number.

It is an amenable number.

2610439681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2610439681 is an equidigital number, since it uses as much as digits as its factorization.

2610439681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 2610439681 is about 51092.4620761223. The cubic root of 2610439681 is about 1376.9068298519.

The spelling of 2610439681 in words is "two billion, six hundred ten million, four hundred thirty-nine thousand, six hundred eighty-one".