7491248659 has 2 divisors, whose sum is σ = 7491248660. Its totient is φ = 7491248658.

The previous prime is 7491248647. The next prime is 7491248717. The reversal of 7491248659 is 9568421947.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7491248659 - 2⁹ = 7491248147 is a prime.

It is a super-2 number, since 2×7491248659² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7491248159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3745624329 + 3745624330.

It is an arithmetic number, because the mean of its divisors is an integer number (3745624330).

Almost surely, 2^7491248659 is an apocalyptic number.

7491248659 is a deficient number, since it is larger than the sum of its proper divisors (1).

7491248659 is an equidigital number, since it uses as much as digits as its factorization.

7491248659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 55.

The square root of 7491248659 is about 86551.9997400407. Note that the first 3 decimals coincide. The cubic root of 7491248659 is about 1956.6721833433.

The spelling of 7491248659 in words is "seven billion, four hundred ninety-one million, two hundred forty-eight thousand, six hundred fifty-nine".