18730942 has 16 divisors (see below), whose sum is σ = 28985040. Its totient is φ = 9073792.

The previous prime is 18730927. The next prime is 18730951. The reversal of 18730942 is 24903781.

It is a junction number, because it is equal to n+sod(n) for n = 18730898 and 18730907.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7734 + ... + 9862.

It is an arithmetic number, because the mean of its divisors is an integer number (1811565).

Almost surely, 2^18730942 is an apocalyptic number.

18730942 is a deficient number, since it is larger than the sum of its proper divisors (10254098).

18730942 is a wasteful number, since it uses less digits than its factorization.

18730942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2267.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 18730942 is about 4327.9258311575. The cubic root of 18730942 is about 265.5746022401.

The spelling of 18730942 in words is "eighteen million, seven hundred thirty thousand, nine hundred forty-two".