1995991375 has 32 divisors (see below), whose sum is σ = 2873594880. Its totient is φ = 1355824800.

The previous prime is 1995991337. The next prime is 1995991379. The reversal of 1995991375 is 5731995991.

It is not a de Polignac number, because 1995991375 - 2¹⁷ = 1995860303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1995991379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82966 + ... + 104284.

It is an arithmetic number, because the mean of its divisors is an integer number (89799840).

Almost surely, 2^1995991375 is an apocalyptic number.

1995991375 is a deficient number, since it is larger than the sum of its proper divisors (877603505).

1995991375 is a wasteful number, since it uses less digits than its factorization.

1995991375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21448 (or 21438 counting only the distinct ones).

The product of its digits is 3444525, while the sum is 58.

The square root of 1995991375 is about 44676.5192802662. The cubic root of 1995991375 is about 1259.0787283823.

The spelling of 1995991375 in words is "one billion, nine hundred ninety-five million, nine hundred ninety-one thousand, three hundred seventy-five".