1816372 has 12 divisors (see below), whose sum is σ = 3217536. Its totient is φ = 897080.

The previous prime is 1816337. The next prime is 1816387. The reversal of 1816372 is 2736181.

It is a self number, because there is not a number n which added to its sum of digits gives 1816372.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 2404 + ... + 3067.

It is an arithmetic number, because the mean of its divisors is an integer number (268128).

2^1816372 is an apocalyptic number.

It is an amenable number.

1816372 is a deficient number, since it is larger than the sum of its proper divisors (1401164).

1816372 is a wasteful number, since it uses less digits than its factorization.

1816372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5558 (or 5556 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 1816372 is about 1347.7284592973. The cubic root of 1816372 is about 122.0117340680.

The spelling of 1816372 in words is "one million, eight hundred sixteen thousand, three hundred seventy-two".