18801442 has 32 divisors (see below), whose sum is σ = 32607360. Its totient is φ = 8046720.

The previous prime is 18801403. The next prime is 18801443. The reversal of 18801442 is 24410881.

It is a self number, because there is not a number n which added to its sum of digits gives 18801442.

It is not an unprimeable number, because it can be changed into a prime (18801443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36684 + ... + 37192.

It is an arithmetic number, because the mean of its divisors is an integer number (1018980).

Almost surely, 2^18801442 is an apocalyptic number.

18801442 is a deficient number, since it is larger than the sum of its proper divisors (13805918).

18801442 is a wasteful number, since it uses less digits than its factorization.

18801442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618.

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 18801442 is about 4336.0629607975. The cubic root of 18801442 is about 265.9073772532.

The spelling of 18801442 in words is "eighteen million, eight hundred one thousand, four hundred forty-two".