7475238917 has 2 divisors, whose sum is σ = 7475238918. Its totient is φ = 7475238916.

The previous prime is 7475238899. The next prime is 7475238919. The reversal of 7475238917 is 7198325747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6780863716 + 694375201 = 82346^2 + 26351^2 .

It is an emirp because it is prime and its reverse (7198325747) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7475238917 is a prime.

Together with 7475238919, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7475238919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3737619458 + 3737619459.

It is an arithmetic number, because the mean of its divisors is an integer number (3737619459).

Almost surely, 2^7475238917 is an apocalyptic number.

It is an amenable number.

7475238917 is a deficient number, since it is larger than the sum of its proper divisors (1).

7475238917 is an equidigital number, since it uses as much as digits as its factorization.

7475238917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2963520, while the sum is 53.

The square root of 7475238917 is about 86459.4640105986. The cubic root of 7475238917 is about 1955.2773042191.

The spelling of 7475238917 in words is "seven billion, four hundred seventy-five million, two hundred thirty-eight thousand, nine hundred seventeen".