16618379 has 2 divisors, whose sum is σ = 16618380. Its totient is φ = 16618378.

The previous prime is 16618373. The next prime is 16618403. The reversal of 16618379 is 97381661.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16618379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16618373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8309189 + 8309190.

It is an arithmetic number, because the mean of its divisors is an integer number (8309190).

Almost surely, 2^16618379 is an apocalyptic number.

16618379 is a deficient number, since it is larger than the sum of its proper divisors (1).

16618379 is an equidigital number, since it uses as much as digits as its factorization.

16618379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 16618379 is about 4076.5646076077. The cubic root of 16618379 is about 255.1895502104.

The spelling of 16618379 in words is "sixteen million, six hundred eighteen thousand, three hundred seventy-nine".