18842807 has 8 divisors (see below), whose sum is σ = 19126800. Its totient is φ = 18561024.

The previous prime is 18842801. The next prime is 18842809. The reversal of 18842807 is 70824881.

It is a happy number.

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 18842807 - 2¹² = 18838711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18842801) 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, 24119 + ... + 24887.

It is an arithmetic number, because the mean of its divisors is an integer number (2390850).

Almost surely, 2^18842807 is an apocalyptic number.

18842807 is a deficient number, since it is larger than the sum of its proper divisors (283993).

18842807 is a wasteful number, since it uses less digits than its factorization.

18842807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105.

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 18842807 is about 4340.8302201307. The cubic root of 18842807 is about 266.1022417752.

The spelling of 18842807 in words is "eighteen million, eight hundred forty-two thousand, eight hundred seven".