1018291 has 2 divisors, whose sum is σ = 1018292. Its totient is φ = 1018290.

The previous prime is 1018271. The next prime is 1018301. The reversal of 1018291 is 1928101.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1018291 is a prime.

It is not a weakly prime, because it can be changed into another prime (1018201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509145 + 509146.

It is an arithmetic number, because the mean of its divisors is an integer number (509146).

2^1018291 is an apocalyptic number.

1018291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1018291 is an equidigital number, since it uses as much as digits as its factorization.

1018291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 1018291 is about 1009.1040580634. The cubic root of 1018291 is about 100.6060199790.

The spelling of 1018291 in words is "one million, eighteen thousand, two hundred ninety-one".