7985204291 has 2 divisors, whose sum is σ = 7985204292. Its totient is φ = 7985204290.

The previous prime is 7985204281. The next prime is 7985204327. The reversal of 7985204291 is 1924025897.

It is a weak prime.

It is an emirp because it is prime and its reverse (1924025897) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7985204291 - 2¹⁰ = 7985203267 is a prime.

It is not a weakly prime, because it can be changed into another prime (7985204231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3992602145 + 3992602146.

It is an arithmetic number, because the mean of its divisors is an integer number (3992602146).

Almost surely, 2^7985204291 is an apocalyptic number.

7985204291 is a deficient number, since it is larger than the sum of its proper divisors (1).

7985204291 is an equidigital number, since it uses as much as digits as its factorization.

7985204291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 7985204291 is about 89359.9702943102. The cubic root of 7985204291 is about 1998.7662633534.

The spelling of 7985204291 in words is "seven billion, nine hundred eighty-five million, two hundred four thousand, two hundred ninety-one".