1813488 has 20 divisors (see below), whose sum is σ = 4684968. Its totient is φ = 604480.

The previous prime is 1813477. The next prime is 1813499. The reversal of 1813488 is 8843181.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1813477) and next prime (1813499).

It is a super-2 number, since 2×1813488² = 6577477452288, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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, 18843 + ... + 18938.

2^1813488 is an apocalyptic number.

It is an amenable number.

1813488 is an abundant number, since it is smaller than the sum of its proper divisors (2871480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1813488 is a wasteful number, since it uses less digits than its factorization.

1813488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37792 (or 37786 counting only the distinct ones).

The product of its digits is 6144, while the sum is 33.

The square root of 1813488 is about 1346.6580857812. The cubic root of 1813488 is about 121.9471239106.

The spelling of 1813488 in words is "one million, eight hundred thirteen thousand, four hundred eighty-eight".