1890816 has 40 divisors (see below), whose sum is σ = 5041344. Its totient is φ = 629760.

The previous prime is 1890809. The next prime is 1890827. The reversal of 1890816 is 6180981.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921 + ... + 2151.

2^1890816 is an apocalyptic number.

1890816 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 1890816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2520672).

1890816 is an abundant number, since it is smaller than the sum of its proper divisors (3150528).

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

1890816 is an equidigital number, since it uses as much as digits as its factorization.

1890816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252 (or 1236 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 1890816 is about 1375.0694527914. The cubic root of 1890816 is about 123.6563499199.

The spelling of 1890816 in words is "one million, eight hundred ninety thousand, eight hundred sixteen".