7791492487 has 2 divisors, whose sum is σ = 7791492488. Its totient is φ = 7791492486.

The previous prime is 7791492481. The next prime is 7791492491. The reversal of 7791492487 is 7842941977.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7791492487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7791492481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3895746243 + 3895746244.

It is an arithmetic number, because the mean of its divisors is an integer number (3895746244).

Almost surely, 2^7791492487 is an apocalyptic number.

7791492487 is a deficient number, since it is larger than the sum of its proper divisors (1).

7791492487 is an equidigital number, since it uses as much as digits as its factorization.

7791492487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7112448, while the sum is 58.

The square root of 7791492487 is about 88269.4312148889. The cubic root of 7791492487 is about 1982.4711932066.

The spelling of 7791492487 in words is "seven billion, seven hundred ninety-one million, four hundred ninety-two thousand, four hundred eighty-seven".