1995922656 has 144 divisors (see below), whose sum is σ = 6985821024. Its totient is φ = 526390272.

The previous prime is 1995922619. The next prime is 1995922667. The reversal of 1995922656 is 6562295991.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 11871 + ... + 64286.

It is an arithmetic number, because the mean of its divisors is an integer number (48512646).

Almost surely, 2^1995922656 is an apocalyptic number.

1995922656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1995922656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3492910512).

1995922656 is an abundant number, since it is smaller than the sum of its proper divisors (4989898368).

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

1995922656 is a wasteful number, since it uses less digits than its factorization.

1995922656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76193 (or 76182 counting only the distinct ones).

The product of its digits is 2624400, while the sum is 54.

The square root of 1995922656 is about 44675.7502007521. The cubic root of 1995922656 is about 1259.0642788169.

The spelling of 1995922656 in words is "one billion, nine hundred ninety-five million, nine hundred twenty-two thousand, six hundred fifty-six".