1912999896 has 64 divisors (see below), whose sum is σ = 5329411200. Its totient is φ = 635804064.

The previous prime is 1912999883. The next prime is 1912999903. The reversal of 1912999896 is 6989992191.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62191 + ... + 87713.

It is an arithmetic number, because the mean of its divisors is an integer number (83272050).

Almost surely, 2^1912999896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1912999896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2664705600).

1912999896 is an abundant number, since it is smaller than the sum of its proper divisors (3416411304).

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

1912999896 is a wasteful number, since it uses less digits than its factorization.

1912999896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25885 (or 25875 counting only the distinct ones).

The product of its digits is 5668704, while the sum is 63.

The square root of 1912999896 is about 43737.8542683566. The cubic root of 1912999896 is about 1241.3806802839.

It can be divided in two parts, 19129 and 99896, that added together give a square (119025 = 345²).

The spelling of 1912999896 in words is "one billion, nine hundred twelve million, nine hundred ninety-nine thousand, eight hundred ninety-six".