1995502081 has 2 divisors, whose sum is σ = 1995502082. Its totient is φ = 1995502080.

The previous prime is 1995502063. The next prime is 1995502097. The reversal of 1995502081 is 1802055991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1707011856 + 288490225 = 41316^2 + 16985^2 .

It is a cyclic number.

It is not a de Polignac number, because 1995502081 - 2⁵ = 1995502049 is a prime.

It is a super-2 number, since 2×1995502081² = 7964057110550661122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1995502051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 997751040 + 997751041.

It is an arithmetic number, because the mean of its divisors is an integer number (997751041).

Almost surely, 2^1995502081 is an apocalyptic number.

It is an amenable number.

1995502081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1995502081 is an equidigital number, since it uses as much as digits as its factorization.

1995502081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 40.

The square root of 1995502081 is about 44671.0429808842. The cubic root of 1995502081 is about 1258.9758371538.

The spelling of 1995502081 in words is "one billion, nine hundred ninety-five million, five hundred two thousand, eighty-one".