18447034 has 4 divisors (see below), whose sum is σ = 27670554. Its totient is φ = 9223516.

The previous prime is 18447001. The next prime is 18447061. The reversal of 18447034 is 43074481.

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

It can be written as a sum of positive squares in only one way, i.e., 18447025 + 9 = 4295^2 + 3^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 18446987 and 18447005.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4611757 + ... + 4611760.

Almost surely, 2^18447034 is an apocalyptic number.

18447034 is a deficient number, since it is larger than the sum of its proper divisors (9223520).

18447034 is an equidigital number, since it uses as much as digits as its factorization.

18447034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9223519.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 18447034 is about 4295.0010477298. The cubic root of 18447034 is about 264.2259792227.

The spelling of 18447034 in words is "eighteen million, four hundred forty-seven thousand, thirty-four".