18673742 has 8 divisors (see below), whose sum is σ = 28029456. Its totient is φ = 9330592.

The previous prime is 18673729. The next prime is 18673763. The reversal of 18673742 is 24737681.

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

It is a junction number, because it is equal to n+sod(n) for n = 18673696 and 18673705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2903 + ... + 6765.

It is an arithmetic number, because the mean of its divisors is an integer number (3503682).

Almost surely, 2^18673742 is an apocalyptic number.

18673742 is a deficient number, since it is larger than the sum of its proper divisors (9355714).

18673742 is a wasteful number, since it uses less digits than its factorization.

18673742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6282.

The product of its digits is 56448, while the sum is 38.

The square root of 18673742 is about 4321.3125320902. The cubic root of 18673742 is about 265.3039919548.

The spelling of 18673742 in words is "eighteen million, six hundred seventy-three thousand, seven hundred forty-two".