18234374 has 4 divisors (see below), whose sum is σ = 27351564. Its totient is φ = 9117186.

The previous prime is 18234361. The next prime is 18234379. The reversal of 18234374 is 47343281.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18234374.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18234379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4558592 + ... + 4558595.

It is an arithmetic number, because the mean of its divisors is an integer number (6837891).

Almost surely, 2^18234374 is an apocalyptic number.

18234374 is a deficient number, since it is larger than the sum of its proper divisors (9117190).

18234374 is an equidigital number, since it uses as much as digits as its factorization.

18234374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9117189.

The product of its digits is 16128, while the sum is 32.

The square root of 18234374 is about 4270.1725960434. The cubic root of 18234374 is about 263.2067076231.

The spelling of 18234374 in words is "eighteen million, two hundred thirty-four thousand, three hundred seventy-four".