18819073 has 8 divisors (see below), whose sum is σ = 23162048. Its totient is φ = 14889744.

The previous prime is 18819061. The next prime is 18819107. The reversal of 18819073 is 37091881.

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

It is a cyclic number.

It is not a de Polignac number, because 18819073 - 2¹³ = 18810881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18819013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103311 + ... + 103492.

It is an arithmetic number, because the mean of its divisors is an integer number (2895256).

Almost surely, 2^18819073 is an apocalyptic number.

18819073 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18819073 is a deficient number, since it is larger than the sum of its proper divisors (4342975).

18819073 is a wasteful number, since it uses less digits than its factorization.

18819073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206823.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 18819073 is about 4338.0955498928. The cubic root of 18819073 is about 265.9904692536.

The spelling of 18819073 in words is "eighteen million, eight hundred nineteen thousand, seventy-three".