18811334 has 4 divisors (see below), whose sum is σ = 28217004. Its totient is φ = 9405666.

The previous prime is 18811313. The next prime is 18811337. The reversal of 18811334 is 43311881.

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

It is a junction number, because it is equal to n+sod(n) for n = 18811297 and 18811306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18811337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4702832 + ... + 4702835.

It is an arithmetic number, because the mean of its divisors is an integer number (7054251).

Almost surely, 2^18811334 is an apocalyptic number.

18811334 is a deficient number, since it is larger than the sum of its proper divisors (9405670).

18811334 is an equidigital number, since it uses as much as digits as its factorization.

18811334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9405669.

The product of its digits is 2304, while the sum is 29.

The square root of 18811334 is about 4337.2034768961. The cubic root of 18811334 is about 265.9540030139.

The spelling of 18811334 in words is "eighteen million, eight hundred eleven thousand, three hundred thirty-four".