2056385987 has 2 divisors, whose sum is σ = 2056385988. Its totient is φ = 2056385986.

The previous prime is 2056385953. The next prime is 2056386019. The reversal of 2056385987 is 7895836502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2056385987 - 2⁶ = 2056385923 is a prime.

It is not a weakly prime, because it can be changed into another prime (2056385917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028192993 + 1028192994.

It is an arithmetic number, because the mean of its divisors is an integer number (1028192994).

Almost surely, 2^2056385987 is an apocalyptic number.

2056385987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2056385987 is an equidigital number, since it uses as much as digits as its factorization.

2056385987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The square root of 2056385987 is about 45347.3922844523. The cubic root of 2056385987 is about 1271.6518046306.

The spelling of 2056385987 in words is "two billion, fifty-six million, three hundred eighty-five thousand, nine hundred eighty-seven".