7489880681 has 2 divisors, whose sum is σ = 7489880682. Its totient is φ = 7489880680.

The previous prime is 7489880639. The next prime is 7489880737. The reversal of 7489880681 is 1860889847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5766883600 + 1722997081 = 75940^2 + 41509^2 .

It is a cyclic number.

It is not a de Polignac number, because 7489880681 - 2¹⁸ = 7489618537 is a prime.

It is a super-2 number, since 2×7489880681² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7489880681.

It is not a weakly prime, because it can be changed into another prime (7489880381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3744940340 + 3744940341.

It is an arithmetic number, because the mean of its divisors is an integer number (3744940341).

Almost surely, 2^7489880681 is an apocalyptic number.

It is an amenable number.

7489880681 is a deficient number, since it is larger than the sum of its proper divisors (1).

7489880681 is an equidigital number, since it uses as much as digits as its factorization.

7489880681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6193152, while the sum is 59.

The square root of 7489880681 is about 86544.0967426433. The cubic root of 7489880681 is about 1956.5530733627.

The spelling of 7489880681 in words is "seven billion, four hundred eighty-nine million, eight hundred eighty thousand, six hundred eighty-one".