1995990073 has 16 divisors (see below), whose sum is σ = 2499209856. Its totient is φ = 1548627840.

The previous prime is 1995990053. The next prime is 1995990079. The reversal of 1995990073 is 3700995991.

It is a cyclic number.

It is not a de Polignac number, because 1995990073 - 2⁵ = 1995990041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1995990073.

It is not an unprimeable number, because it can be changed into a prime (1995990079) 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 in 15 ways as a sum of consecutive naturals, for example, 37686 + ... + 73567.

It is an arithmetic number, because the mean of its divisors is an integer number (156200616).

Almost surely, 2^1995990073 is an apocalyptic number.

It is an amenable number.

1995990073 is a deficient number, since it is larger than the sum of its proper divisors (503219783).

1995990073 is a wasteful number, since it uses less digits than its factorization.

1995990073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111504.

The product of its (nonzero) digits is 688905, while the sum is 52.

The square root of 1995990073 is about 44676.5047088512. The cubic root of 1995990073 is about 1259.0784546135.

The spelling of 1995990073 in words is "one billion, nine hundred ninety-five million, nine hundred ninety thousand, seventy-three".