1995306920 has 32 divisors (see below), whose sum is σ = 4497141600. Its totient is φ = 796753728.

The previous prime is 1995306857. The next prime is 1995306947. The reversal of 1995306920 is 296035991.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19010 + ... + 65969.

It is an arithmetic number, because the mean of its divisors is an integer number (140535675).

Almost surely, 2^1995306920 is an apocalyptic number.

1995306920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1995306920 is an abundant number, since it is smaller than the sum of its proper divisors (2501834680).

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

1995306920 is a wasteful number, since it uses less digits than its factorization.

1995306920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85577 (or 85573 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 44.

The square root of 1995306920 is about 44668.8585034361. The cubic root of 1995306920 is about 1258.9347930149.

The spelling of 1995306920 in words is "one billion, nine hundred ninety-five million, three hundred six thousand, nine hundred twenty".