1813130 has 32 divisors (see below), whose sum is σ = 3639168. Its totient is φ = 644800.

The previous prime is 1813121. The next prime is 1813139. The reversal of 1813130 is 313181.

It is an interprime number because it is at equal distance from previous prime (1813121) and next prime (1813139).

It is a junction number, because it is equal to n+sod(n) for n = 1813099 and 1813108.

It is not an unprimeable number, because it can be changed into a prime (1813139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5675 + ... + 5985.

It is an arithmetic number, because the mean of its divisors is an integer number (113724).

2^1813130 is an apocalyptic number.

1813130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1813130 is an abundant number, since it is smaller than the sum of its proper divisors (1826038).

1813130 is a wasteful number, since it uses less digits than its factorization.

1813130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1813130 is about 1346.5251575815. The cubic root of 1813130 is about 121.9390988702.

The spelling of 1813130 in words is "one million, eight hundred thirteen thousand, one hundred thirty".