2156104807 has 2 divisors, whose sum is σ = 2156104808. Its totient is φ = 2156104806.

The previous prime is 2156104763. The next prime is 2156104897. The reversal of 2156104807 is 7084016512.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2156104807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2156104897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078052403 + 1078052404.

It is an arithmetic number, because the mean of its divisors is an integer number (1078052404).

Almost surely, 2^2156104807 is an apocalyptic number.

2156104807 is a deficient number, since it is larger than the sum of its proper divisors (1).

2156104807 is an equidigital number, since it uses as much as digits as its factorization.

2156104807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 2156104807 is about 46433.8756405278. The cubic root of 2156104807 is about 1291.8833150875.

The spelling of 2156104807 in words is "two billion, one hundred fifty-six million, one hundred four thousand, eight hundred seven".