18312334 has 4 divisors (see below), whose sum is σ = 27468504. Its totient is φ = 9156166.

The previous prime is 18312331. The next prime is 18312337. The reversal of 18312334 is 43321381.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (18312331) and next prime (18312337).

It is a junction number, because it is equal to n+sod(n) for n = 18312299 and 18312308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18312331) 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, 4578082 + ... + 4578085.

It is an arithmetic number, because the mean of its divisors is an integer number (6867126).

Almost surely, 2^18312334 is an apocalyptic number.

18312334 is a deficient number, since it is larger than the sum of its proper divisors (9156170).

18312334 is an equidigital number, since it uses as much as digits as its factorization.

18312334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9156169.

The product of its digits is 1728, while the sum is 25.

The square root of 18312334 is about 4279.2912964649. The cubic root of 18312334 is about 263.5812826016.

The spelling of 18312334 in words is "eighteen million, three hundred twelve thousand, three hundred thirty-four".