1995737664 has 28 divisors (see below), whose sum is σ = 5280389744. Its totient is φ = 665245824.

The previous prime is 1995737663. The next prime is 1995737701. The reversal of 1995737664 is 4667375991.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1995737663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5197042 + ... + 5197425.

It is an arithmetic number, because the mean of its divisors is an integer number (188585348).

Almost surely, 2^1995737664 is an apocalyptic number.

It is an amenable number.

1995737664 is an abundant number, since it is smaller than the sum of its proper divisors (3284652080).

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

1995737664 is a wasteful number, since it uses less digits than its factorization.

1995737664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10394482 (or 10394472 counting only the distinct ones).

The product of its digits is 8573040, while the sum is 57.

The square root of 1995737664 is about 44673.6797678454. The cubic root of 1995737664 is about 1259.0253788434.

The spelling of 1995737664 in words is "one billion, nine hundred ninety-five million, seven hundred thirty-seven thousand, six hundred sixty-four".