18713943 has 16 divisors (see below), whose sum is σ = 28316160. Its totient is φ = 12209688.

The previous prime is 18713921. The next prime is 18713951. The reversal of 18713943 is 34931781.

It is a happy number.

It is not a de Polignac number, because 18713943 - 2⁵ = 18713911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18713898 and 18713907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18713963) 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, 6105 + ... + 8642.

It is an arithmetic number, because the mean of its divisors is an integer number (1769760).

Almost surely, 2^18713943 is an apocalyptic number.

18713943 is a deficient number, since it is larger than the sum of its proper divisors (9602217).

18713943 is a wasteful number, since it uses less digits than its factorization.

18713943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14803 (or 14797 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 18713943 is about 4325.9615116180. The cubic root of 18713943 is about 265.4942384399.

The spelling of 18713943 in words is "eighteen million, seven hundred thirteen thousand, nine hundred forty-three".