1916585216 has 288 divisors, whose sum is σ = 5082201600. Its totient is φ = 715309056.

The previous prime is 1916585213. The next prime is 1916585243. The reversal of 1916585216 is 6125856191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916585213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26254556 + ... + 26254628.

Almost surely, 2^1916585216 is an apocalyptic number.

1916585216 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 1916585216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2541100800).

1916585216 is an abundant number, since it is smaller than the sum of its proper divisors (3165616384).

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

1916585216 is an equidigital number, since it uses as much as digits as its factorization.

1916585216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 118 counting only the distinct ones).

The product of its digits is 129600, while the sum is 44.

The square root of 1916585216 is about 43778.8215464967. The cubic root of 1916585216 is about 1242.1557229051.

The spelling of 1916585216 in words is "one billion, nine hundred sixteen million, five hundred eighty-five thousand, two hundred sixteen".