18347041 has 4 divisors (see below), whose sum is σ = 18359572. Its totient is φ = 18334512.

The previous prime is 18347033. The next prime is 18347051. The reversal of 18347041 is 14074381.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5387041 + 12960000 = 2321^2 + 3600^2 .

It is a cyclic number.

It is not a de Polignac number, because 18347041 - 2³ = 18347033 is a prime.

It is a super-2 number, since 2×18347041² = 673227826911362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18347051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3726 + ... + 7111.

It is an arithmetic number, because the mean of its divisors is an integer number (4589893).

Almost surely, 2^18347041 is an apocalyptic number.

It is an amenable number.

18347041 is a deficient number, since it is larger than the sum of its proper divisors (12531).

18347041 is a wasteful number, since it uses less digits than its factorization.

18347041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12530.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 18347041 is about 4283.3446043950. The cubic root of 18347041 is about 263.7476976207.

The spelling of 18347041 in words is "eighteen million, three hundred forty-seven thousand, forty-one".