7345981691 has 2 divisors, whose sum is σ = 7345981692. Its totient is φ = 7345981690.

The previous prime is 7345981651. The next prime is 7345981693. The reversal of 7345981691 is 1961895437.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7345981691 - 2⁶ = 7345981627 is a prime.

Together with 7345981693, 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 (7345981693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3672990845 + 3672990846.

It is an arithmetic number, because the mean of its divisors is an integer number (3672990846).

Almost surely, 2^7345981691 is an apocalyptic number.

7345981691 is a deficient number, since it is larger than the sum of its proper divisors (1).

7345981691 is an equidigital number, since it uses as much as digits as its factorization.

7345981691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 53.

The square root of 7345981691 is about 85708.7025394738. The cubic root of 7345981691 is about 1943.9418991813.

The spelling of 7345981691 in words is "seven billion, three hundred forty-five million, nine hundred eighty-one thousand, six hundred ninety-one".