1930816 has 14 divisors (see below), whose sum is σ = 3831590. Its totient is φ = 965376.

The previous prime is 1930811. The next prime is 1930823. The reversal of 1930816 is 6180391.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1700416 + 230400 = 1304^2 + 480^2 .

It is not an unprimeable number, because it can be changed into a prime (1930811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15021 + ... + 15148.

It is an arithmetic number, because the mean of its divisors is an integer number (273685).

2^1930816 is an apocalyptic number.

1930816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1930816 is a deficient number, since it is larger than the sum of its proper divisors (1900774).

1930816 is an equidigital number, since it uses as much as digits as its factorization.

1930816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30181 (or 30171 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1930816 is about 1389.5380527355. The cubic root of 1930816 is about 124.5222510404.

The spelling of 1930816 in words is "one million, nine hundred thirty thousand, eight hundred sixteen".