1956825887 has 2 divisors, whose sum is σ = 1956825888. Its totient is φ = 1956825886.

The previous prime is 1956825881. The next prime is 1956825917. The reversal of 1956825887 is 7885286591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1956825887 - 2⁸ = 1956825631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1956825881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978412943 + 978412944.

It is an arithmetic number, because the mean of its divisors is an integer number (978412944).

Almost surely, 2^1956825887 is an apocalyptic number.

1956825887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1956825887 is an equidigital number, since it uses as much as digits as its factorization.

1956825887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9676800, while the sum is 59.

The square root of 1956825887 is about 44236.0247648904. The cubic root of 1956825887 is about 1250.7890244076.

The spelling of 1956825887 in words is "one billion, nine hundred fifty-six million, eight hundred twenty-five thousand, eight hundred eighty-seven".