18234074 has 4 divisors (see below), whose sum is σ = 27351114. Its totient is φ = 9117036.

The previous prime is 18234071. The next prime is 18234077. The reversal of 18234074 is 47043281.

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 (18234071) and next prime (18234077).

It can be written as a sum of positive squares in only one way, i.e., 17682025 + 552049 = 4205^2 + 743^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18234071) 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, 4558517 + ... + 4558520.

Almost surely, 2^18234074 is an apocalyptic number.

18234074 is a deficient number, since it is larger than the sum of its proper divisors (9117040).

18234074 is an equidigital number, since it uses as much as digits as its factorization.

18234074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9117039.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 18234074 is about 4270.1374685132. The cubic root of 18234074 is about 263.2052641507.

The spelling of 18234074 in words is "eighteen million, two hundred thirty-four thousand, seventy-four".