7918291 has 2 divisors, whose sum is σ = 7918292. Its totient is φ = 7918290.

The previous prime is 7918223. The next prime is 7918319. The reversal of 7918291 is 1928197.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7918291 - 2¹⁵ = 7885523 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7918291.

It is not a weakly prime, because it can be changed into another prime (7918201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3959145 + 3959146.

It is an arithmetic number, because the mean of its divisors is an integer number (3959146).

Almost surely, 2^7918291 is an apocalyptic number.

7918291 is a deficient number, since it is larger than the sum of its proper divisors (1).

7918291 is an equidigital number, since it uses as much as digits as its factorization.

7918291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 37.

The square root of 7918291 is about 2813.9458061590. The cubic root of 7918291 is about 199.3167602417.

The spelling of 7918291 in words is "seven million, nine hundred eighteen thousand, two hundred ninety-one".