1999995712 has 56 divisors (see below), whose sum is σ = 4662598752. Its totient is φ = 839155200.

The previous prime is 1999995707. The next prime is 1999995713. The reversal of 1999995712 is 2175999991.

It is a super-4 number, since 4×1999995712⁴ (a number of 38 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1999995713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100114 + ... + 118417.

It is an arithmetic number, because the mean of its divisors is an integer number (83260692).

Almost surely, 2^1999995712 is an apocalyptic number.

It is an amenable number.

1999995712 is an abundant number, since it is smaller than the sum of its proper divisors (2662603040).

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

1999995712 is a wasteful number, since it uses less digits than its factorization.

1999995712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218567 (or 218557 counting only the distinct ones).

The product of its digits is 4133430, while the sum is 61.

The square root of 1999995712 is about 44721.3116086727. The cubic root of 1999995712 is about 1259.9201494707.

The spelling of 1999995712 in words is "one billion, nine hundred ninety-nine million, nine hundred ninety-five thousand, seven hundred twelve".