13918747 has 2 divisors, whose sum is σ = 13918748. Its totient is φ = 13918746.

The previous prime is 13918741. The next prime is 13918759. The reversal of 13918747 is 74781931.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13918747 is a prime.

It is not a weakly prime, because it can be changed into another prime (13918741) 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 as a sum of consecutive naturals, namely, 6959373 + 6959374.

It is an arithmetic number, because the mean of its divisors is an integer number (6959374).

Almost surely, 2^13918747 is an apocalyptic number.

13918747 is a deficient number, since it is larger than the sum of its proper divisors (1).

13918747 is an equidigital number, since it uses as much as digits as its factorization.

13918747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 40.

The square root of 13918747 is about 3730.7836978308. The cubic root of 13918747 is about 240.5470564890.

The spelling of 13918747 in words is "thirteen million, nine hundred eighteen thousand, seven hundred forty-seven".