18947063 has 8 divisors (see below), whose sum is σ = 20018880. Its totient is φ = 17903200.

The previous prime is 18947041. The next prime is 18947069. The reversal of 18947063 is 36074981.

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 18947063 - 2⁶ = 18946999 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 (18947069) 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, 5588 + ... + 8313.

It is an arithmetic number, because the mean of its divisors is an integer number (2502360).

Almost surely, 2^18947063 is an apocalyptic number.

18947063 is a deficient number, since it is larger than the sum of its proper divisors (1071817).

18947063 is a wasteful number, since it uses less digits than its factorization.

18947063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13977.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 18947063 is about 4352.8224176964. The cubic root of 18947063 is about 266.5921147498.

The spelling of 18947063 in words is "eighteen million, nine hundred forty-seven thousand, sixty-three".