1812964 has 12 divisors (see below), whose sum is σ = 3282300. Its totient is φ = 875168.

The previous prime is 1812959. The next prime is 1812983. The reversal of 1812964 is 4692181.

1812964 = T₃₃₉ + T₃₄₀ + ... + T₃₆₇.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1542564 + 270400 = 1242^2 + 520^2 .

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, 7699 + ... + 7930.

It is an arithmetic number, because the mean of its divisors is an integer number (273525).

2^1812964 is an apocalyptic number.

It is an amenable number.

1812964 is a deficient number, since it is larger than the sum of its proper divisors (1469336).

1812964 is a wasteful number, since it uses less digits than its factorization.

1812964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15662 (or 15660 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

The square root of 1812964 is about 1346.4635160300. The cubic root of 1812964 is about 121.9353774036.

The spelling of 1812964 in words is "one million, eight hundred twelve thousand, nine hundred sixty-four".