18834434 has 16 divisors (see below), whose sum is σ = 29824800. Its totient is φ = 8895744.

The previous prime is 18834433. The next prime is 18834463. The reversal of 18834434 is 43443881.

It is a junction number, because it is equal to n+sod(n) for n = 18834394 and 18834403.

It is not an unprimeable number, because it can be changed into a prime (18834433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21497 + ... + 22355.

It is an arithmetic number, because the mean of its divisors is an integer number (1864050).

Almost surely, 2^18834434 is an apocalyptic number.

18834434 is a deficient number, since it is larger than the sum of its proper divisors (10990366).

18834434 is a wasteful number, since it uses less digits than its factorization.

18834434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457.

The product of its digits is 36864, while the sum is 35.

The square root of 18834434 is about 4339.8656661238. The cubic root of 18834434 is about 266.0628208231.

The spelling of 18834434 in words is "eighteen million, eight hundred thirty-four thousand, four hundred thirty-four".