18837742 has 16 divisors (see below), whose sum is σ = 35229312. Its totient is φ = 7339320.

The previous prime is 18837727. The next prime is 18837761. The reversal of 18837742 is 24773881.

It is a junction number, because it is equal to n+sod(n) for n = 18837695 and 18837704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61008 + ... + 61315.

It is an arithmetic number, because the mean of its divisors is an integer number (2201832).

Almost surely, 2^18837742 is an apocalyptic number.

18837742 is a deficient number, since it is larger than the sum of its proper divisors (16391570).

18837742 is a wasteful number, since it uses less digits than its factorization.

18837742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122343.

The product of its digits is 75264, while the sum is 40.

The square root of 18837742 is about 4340.2467671781. The cubic root of 18837742 is about 266.0783966259.

The spelling of 18837742 in words is "eighteen million, eight hundred thirty-seven thousand, seven hundred forty-two".