7859610491 has 2 divisors, whose sum is σ = 7859610492. Its totient is φ = 7859610490.

The previous prime is 7859610487. The next prime is 7859610523. The reversal of 7859610491 is 1940169587.

It is a weak prime.

It is an emirp because it is prime and its reverse (1940169587) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7859610491 - 2² = 7859610487 is a prime.

It is a super-2 number, since 2×7859610491² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7859610691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3929805245 + 3929805246.

It is an arithmetic number, because the mean of its divisors is an integer number (3929805246).

Almost surely, 2^7859610491 is an apocalyptic number.

7859610491 is a deficient number, since it is larger than the sum of its proper divisors (1).

7859610491 is an equidigital number, since it uses as much as digits as its factorization.

7859610491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 50.

The square root of 7859610491 is about 88654.4442822806. Note that the first 3 decimals coincide. The cubic root of 7859610491 is about 1988.2317643818.

The spelling of 7859610491 in words is "seven billion, eight hundred fifty-nine million, six hundred ten thousand, four hundred ninety-one".