1812956 has 6 divisors (see below), whose sum is σ = 3172680. Its totient is φ = 906476.

The previous prime is 1812949. The next prime is 1812959. The reversal of 1812956 is 6592181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226616 + ... + 226623.

It is an arithmetic number, because the mean of its divisors is an integer number (528780).

2^1812956 is an apocalyptic number.

It is an amenable number.

1812956 is a deficient number, since it is larger than the sum of its proper divisors (1359724).

1812956 is a wasteful number, since it uses less digits than its factorization.

1812956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453243 (or 453241 counting only the distinct ones).

The product of its digits is 4320, while the sum is 32.

The square root of 1812956 is about 1346.4605452816. The cubic root of 1812956 is about 121.9351980501.

The spelling of 1812956 in words is "one million, eight hundred twelve thousand, nine hundred fifty-six".