18679347 has 6 divisors (see below), whose sum is σ = 26981292. Its totient is φ = 12452892.

The previous prime is 18679327. The next prime is 18679363. The reversal of 18679347 is 74397681.

It is not a de Polignac number, because 18679347 - 2¹⁶ = 18613811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18679327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1037733 + ... + 1037750.

It is an arithmetic number, because the mean of its divisors is an integer number (4496882).

Almost surely, 2^18679347 is an apocalyptic number.

18679347 is a deficient number, since it is larger than the sum of its proper divisors (8301945).

18679347 is a wasteful number, since it uses less digits than its factorization.

18679347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075489 (or 2075486 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 18679347 is about 4321.9610132439. The cubic root of 18679347 is about 265.3305333254.

The spelling of 18679347 in words is "eighteen million, six hundred seventy-nine thousand, three hundred forty-seven".