1995629637 has 16 divisors (see below), whose sum is σ = 2674565120. Its totient is φ = 1323572400.

The previous prime is 1995629633. The next prime is 1995629719. The reversal of 1995629637 is 7369265991.

It is not a de Polignac number, because 1995629637 - 2² = 1995629633 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1995629633) 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, 745812 + ... + 748482.

It is an arithmetic number, because the mean of its divisors is an integer number (167160320).

Almost surely, 2^1995629637 is an apocalyptic number.

It is an amenable number.

1995629637 is a deficient number, since it is larger than the sum of its proper divisors (678935483).

1995629637 is a wasteful number, since it uses less digits than its factorization.

1995629637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3864.

The product of its digits is 5511240, while the sum is 57.

The square root of 1995629637 is about 44672.4706838563. The cubic root of 1995629637 is about 1259.0026618983.

The spelling of 1995629637 in words is "one billion, nine hundred ninety-five million, six hundred twenty-nine thousand, six hundred thirty-seven".