1995711972 has 24 divisors (see below), whose sum is σ = 4660478592. Its totient is φ = 664692000.

The previous prime is 1995711967. The next prime is 1995711989. The reversal of 1995711972 is 2791175991.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 52779 + ... + 82322.

It is an arithmetic number, because the mean of its divisors is an integer number (194186608).

Almost surely, 2^1995711972 is an apocalyptic number.

1995711972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1995711972 is an abundant number, since it is smaller than the sum of its proper divisors (2664766620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1995711972 is a wasteful number, since it uses less digits than its factorization.

1995711972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136339 (or 136337 counting only the distinct ones).

The product of its digits is 357210, while the sum is 51.

The square root of 1995711972 is about 44673.3922150535. The cubic root of 1995711972 is about 1259.0199761595.

The spelling of 1995711972 in words is "one billion, nine hundred ninety-five million, seven hundred eleven thousand, nine hundred seventy-two".