442018263 has 8 divisors (see below), whose sum is σ = 589454848. Its totient is φ = 294630264.

The previous prime is 442018249. The next prime is 442018289. The reversal of 442018263 is 362810244.

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

It is not a de Polignac number, because 442018263 - 2¹⁰ = 442017239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442018263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442018963) 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, 28956 + ... + 41502.

It is an arithmetic number, because the mean of its divisors is an integer number (73681856).

Almost surely, 2^442018263 is an apocalyptic number.

442018263 is a deficient number, since it is larger than the sum of its proper divisors (147436585).

442018263 is a wasteful number, since it uses less digits than its factorization.

442018263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24293.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 442018263 is about 21024.2303783040. The cubic root of 442018263 is about 761.7516516270.

The spelling of 442018263 in words is "four hundred forty-two million, eighteen thousand, two hundred sixty-three".