1813492 has 12 divisors (see below), whose sum is σ = 3360420. Its totient is φ = 853376.

The previous prime is 1813477. The next prime is 1813499. The reversal of 1813492 is 2943181.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1648656 + 164836 = 1284^2 + 406^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1813492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1813499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13267 + ... + 13402.

It is an arithmetic number, because the mean of its divisors is an integer number (280035).

2^1813492 is an apocalyptic number.

It is an amenable number.

1813492 is a deficient number, since it is larger than the sum of its proper divisors (1546928).

1813492 is a wasteful number, since it uses less digits than its factorization.

1813492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26690 (or 26688 counting only the distinct ones).

The product of its digits is 1728, while the sum is 28.

The square root of 1813492 is about 1346.6595709384. The cubic root of 1813492 is about 121.9472135699.

The spelling of 1813492 in words is "one million, eight hundred thirteen thousand, four hundred ninety-two".