7290665819 has 2 divisors, whose sum is σ = 7290665820. Its totient is φ = 7290665818.

The previous prime is 7290665749. The next prime is 7290665827. The reversal of 7290665819 is 9185660927.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7290665819 is a prime.

It is a super-2 number, since 2×7290665819² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7290665119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3645332909 + 3645332910.

It is an arithmetic number, because the mean of its divisors is an integer number (3645332910).

Almost surely, 2^7290665819 is an apocalyptic number.

7290665819 is a deficient number, since it is larger than the sum of its proper divisors (1).

7290665819 is an equidigital number, since it uses as much as digits as its factorization.

7290665819 is an evil number, because the sum of its binary digits is even.

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

The square root of 7290665819 is about 85385.3958180203. The cubic root of 7290665819 is about 1939.0502506535.

The spelling of 7290665819 in words is "seven billion, two hundred ninety million, six hundred sixty-five thousand, eight hundred nineteen".