1912005312 has 112 divisors (see below), whose sum is σ = 5806513152. Its totient is φ = 543928320.

The previous prime is 1912005307. The next prime is 1912005371. The reversal of 1912005312 is 2135002191.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 320953 + ... + 326855.

Almost surely, 2^1912005312 is an apocalyptic number.

1912005312 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 1912005312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2903256576).

1912005312 is an abundant number, since it is smaller than the sum of its proper divisors (3894507840).

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

1912005312 is a wasteful number, since it uses less digits than its factorization.

1912005312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6166 (or 6156 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 1912005312 is about 43726.4829594149. The cubic root of 1912005312 is about 1241.1655083967.

The spelling of 1912005312 in words is "one billion, nine hundred twelve million, five thousand, three hundred twelve".