18889042 has 16 divisors (see below), whose sum is σ = 29165472. Its totient is φ = 9171360.

The previous prime is 18889037. The next prime is 18889051. The reversal of 18889042 is 24098881.

It is a junction number, because it is equal to n+sod(n) for n = 18888986 and 18889004.

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, 8817 + ... + 10747.

It is an arithmetic number, because the mean of its divisors is an integer number (1822842).

Almost surely, 2^18889042 is an apocalyptic number.

18889042 is a deficient number, since it is larger than the sum of its proper divisors (10276430).

18889042 is a wasteful number, since it uses less digits than its factorization.

18889042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 18889042 is about 4346.1525513953. The cubic root of 18889042 is about 266.3197109300.

The spelling of 18889042 in words is "eighteen million, eight hundred eighty-nine thousand, forty-two".