1818237441 has 8 divisors (see below), whose sum is σ = 2475897984. Its totient is φ = 1186367600.

The previous prime is 1818237437. The next prime is 1818237467. The reversal of 1818237441 is 1447328181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1818237441 - 2² = 1818237437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1818237441.

It is not an unprimeable number, because it can be changed into a prime (1818237481) 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, 6447510 + ... + 6447791.

It is an arithmetic number, because the mean of its divisors is an integer number (309487248).

Almost surely, 2^1818237441 is an apocalyptic number.

It is an amenable number.

1818237441 is a deficient number, since it is larger than the sum of its proper divisors (657660543).

1818237441 is a wasteful number, since it uses less digits than its factorization.

1818237441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12895351.

The product of its digits is 43008, while the sum is 39.

The square root of 1818237441 is about 42640.7955014913. The cubic root of 1818237441 is about 1220.5348906413.

The spelling of 1818237441 in words is "one billion, eight hundred eighteen million, two hundred thirty-seven thousand, four hundred forty-one".