18713434 has 8 divisors (see below), whose sum is σ = 28359828. Its totient is φ = 9260160.

The previous prime is 18713411. The next prime is 18713437. The reversal of 18713434 is 43431781.

It can be written as a sum of positive squares in 2 ways, for example, as 17015625 + 1697809 = 4125^2 + 1303^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×18713434² = 700385224144712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18713396 and 18713405.

It is not an unprimeable number, because it can be changed into a prime (18713437) 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 in 3 ways as a sum of consecutive naturals, for example, 48037 + ... + 48424.

Almost surely, 2^18713434 is an apocalyptic number.

18713434 is a deficient number, since it is larger than the sum of its proper divisors (9646394).

18713434 is an equidigital number, since it uses as much as digits as its factorization.

18713434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96560.

The product of its digits is 8064, while the sum is 31.

The square root of 18713434 is about 4325.9026803663. The cubic root of 18713434 is about 265.4918313613.

The spelling of 18713434 in words is "eighteen million, seven hundred thirteen thousand, four hundred thirty-four".