1999956096 has 112 divisors (see below), whose sum is σ = 5973977310. Its totient is φ = 666620928.

The previous prime is 1999956083. The next prime is 1999956149. The reversal of 1999956096 is 6906599991.

1999956096 is a `hidden beast` number, since 19 + 9 + 9 + 9 + 5 + 609 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1960718400 + 39237696 = 44280^2 + 6264^2 .

It is a super-2 number, since 2×1999956096² = 7999648771855122432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 82596 + ... + 104028.

Almost surely, 2^1999956096 is an apocalyptic number.

1999956096 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 1999956096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2986988655).

1999956096 is an abundant number, since it is smaller than the sum of its proper divisors (3974021214).

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

1999956096 is an frugal number, since it uses more digits than its factorization.

1999956096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21465 (or 21438 counting only the distinct ones).

The product of its (nonzero) digits is 10628820, while the sum is 63.

The square root of 1999956096 is about 44720.8686856595. The cubic root of 1999956096 is about 1259.9118305651.

The spelling of 1999956096 in words is "one billion, nine hundred ninety-nine million, nine hundred fifty-six thousand, ninety-six".