1318147 has 2 divisors, whose sum is σ = 1318148. Its totient is φ = 1318146.

The previous prime is 1318139. The next prime is 1318157. The reversal of 1318147 is 7418131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1318147 - 2³ = 1318139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1318157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659073 + 659074.

It is an arithmetic number, because the mean of its divisors is an integer number (659074).

2^1318147 is an apocalyptic number.

1318147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318147 is an equidigital number, since it uses as much as digits as its factorization.

1318147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 25.

The square root of 1318147 is about 1148.1058313588. The cubic root of 1318147 is about 109.6447769780.

The spelling of 1318147 in words is "one million, three hundred eighteen thousand, one hundred forty-seven".