1995000312 has 64 divisors (see below), whose sum is σ = 5221532160. Its totient is φ = 633987200.

The previous prime is 1995000253. The next prime is 1995000313. The reversal of 1995000312 is 2130005991.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1995000312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1995000313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165862 + ... + 177482.

It is an arithmetic number, because the mean of its divisors is an integer number (81586440).

Almost surely, 2^1995000312 is an apocalyptic number.

1995000312 is a gapful number since it is divisible by the number (12) 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 1995000312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2610766080).

1995000312 is an abundant number, since it is smaller than the sum of its proper divisors (3226531848).

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

1995000312 is a wasteful number, since it uses less digits than its factorization.

1995000312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11964 (or 11960 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 1995000312 is about 44665.4263608890. The cubic root of 1995000312 is about 1258.8703051495.

The spelling of 1995000312 in words is "one billion, nine hundred ninety-five million, three hundred twelve", and thus it is an aban number.