1995899573 has 2 divisors, whose sum is σ = 1995899574. Its totient is φ = 1995899572.

The previous prime is 1995899561. The next prime is 1995899597. The reversal of 1995899573 is 3759985991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1549760689 + 446138884 = 39367^2 + 21122^2 .

It is a cyclic number.

It is not a de Polignac number, because 1995899573 - 2⁸ = 1995899317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1995899513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 997949786 + 997949787.

It is an arithmetic number, because the mean of its divisors is an integer number (997949787).

Almost surely, 2^1995899573 is an apocalyptic number.

It is an amenable number.

1995899573 is a deficient number, since it is larger than the sum of its proper divisors (1).

1995899573 is an equidigital number, since it uses as much as digits as its factorization.

1995899573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27556200, while the sum is 65.

The square root of 1995899573 is about 44675.4918607507. The cubic root of 1995899573 is about 1259.0594250729.

The spelling of 1995899573 in words is "one billion, nine hundred ninety-five million, eight hundred ninety-nine thousand, five hundred seventy-three".