7618731137 has 2 divisors, whose sum is σ = 7618731138. Its totient is φ = 7618731136.

The previous prime is 7618731077. The next prime is 7618731139. The reversal of 7618731137 is 7311378167.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6600100081 + 1018631056 = 81241^2 + 31916^2 .

It is an emirp because it is prime and its reverse (7311378167) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7618731137 - 2¹⁶ = 7618665601 is a prime.

Together with 7618731139, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7618731139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3809365568 + 3809365569.

It is an arithmetic number, because the mean of its divisors is an integer number (3809365569).

Almost surely, 2^7618731137 is an apocalyptic number.

It is an amenable number.

7618731137 is a deficient number, since it is larger than the sum of its proper divisors (1).

7618731137 is an equidigital number, since it uses as much as digits as its factorization.

7618731137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148176, while the sum is 44.

The square root of 7618731137 is about 87285.3431968965. The cubic root of 7618731137 is about 1967.7090477821.

The spelling of 7618731137 in words is "seven billion, six hundred eighteen million, seven hundred thirty-one thousand, one hundred thirty-seven".