18696347 has 2 divisors, whose sum is σ = 18696348. Its totient is φ = 18696346.

The previous prime is 18696313. The next prime is 18696373. The reversal of 18696347 is 74369681.

It is a strong prime.

It is an emirp because it is prime and its reverse (74369681) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18696347 - 2¹² = 18692251 is a prime.

It is a super-2 number, since 2×18696347² = 699106782288818, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18696298 and 18696307.

It is not a weakly prime, because it can be changed into another prime (18696397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9348173 + 9348174.

It is an arithmetic number, because the mean of its divisors is an integer number (9348174).

Almost surely, 2^18696347 is an apocalyptic number.

18696347 is a deficient number, since it is larger than the sum of its proper divisors (1).

18696347 is an equidigital number, since it uses as much as digits as its factorization.

18696347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 18696347 is about 4323.9272658082. The cubic root of 18696347 is about 265.4110010097.

The spelling of 18696347 in words is "eighteen million, six hundred ninety-six thousand, three hundred forty-seven".