1819912 has 8 divisors (see below), whose sum is σ = 3412350. Its totient is φ = 909952.

The previous prime is 1819891. The next prime is 1819913. The reversal of 1819912 is 2199181.

It can be written as a sum of positive squares in only one way, i.e., 1602756 + 217156 = 1266^2 + 466^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1819913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113737 + ... + 113752.

2^1819912 is an apocalyptic number.

It is an amenable number.

1819912 is a deficient number, since it is larger than the sum of its proper divisors (1592438).

1819912 is a wasteful number, since it uses less digits than its factorization.

1819912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227495 (or 227491 counting only the distinct ones).

The product of its digits is 1296, while the sum is 31.

The square root of 1819912 is about 1349.0411409590. The cubic root of 1819912 is about 122.0909471451.

The spelling of 1819912 in words is "one million, eight hundred nineteen thousand, nine hundred twelve".