1916415612 has 120 divisors (see below), whose sum is σ = 5101392912. Its totient is φ = 629856000.

The previous prime is 1916415569. The next prime is 1916415617. The reversal of 1916415612 is 2165146191.

1916415612 is a `hidden beast` number, since 1 + 9 + 1 + 641 + 5 + 6 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916415617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7951812 + ... + 7952052.

Almost surely, 2^1916415612 is an apocalyptic number.

1916415612 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 1916415612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2550696456).

1916415612 is an abundant number, since it is smaller than the sum of its proper divisors (3184977300).

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

1916415612 is an equidigital number, since it uses as much as digits as its factorization.

1916415612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373 (or 347 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 1916415612 is about 43776.8844483022. The cubic root of 1916415612 is about 1242.1190812099.

The spelling of 1916415612 in words is "one billion, nine hundred sixteen million, four hundred fifteen thousand, six hundred twelve".