18234634 has 16 divisors (see below), whose sum is σ = 30802176. Its totient is φ = 8020800.

The previous prime is 18234631. The next prime is 18234691. The reversal of 18234634 is 43643281.

It is a super-2 number, since 2×18234634² = 665003754227912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 18234596 and 18234605.

It is not an unprimeable number, because it can be changed into a prime (18234631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12687 + ... + 14050.

It is an arithmetic number, because the mean of its divisors is an integer number (1925136).

Almost surely, 2^18234634 is an apocalyptic number.

18234634 is a deficient number, since it is larger than the sum of its proper divisors (12567542).

18234634 is a wasteful number, since it uses less digits than its factorization.

18234634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26781.

The product of its digits is 13824, while the sum is 31.

The square root of 18234634 is about 4270.2030396692. The cubic root of 18234634 is about 263.2079586197.

The spelling of 18234634 in words is "eighteen million, two hundred thirty-four thousand, six hundred thirty-four".