1018318919 has 2 divisors, whose sum is σ = 1018318920. Its totient is φ = 1018318918.

The previous prime is 1018318909. The next prime is 1018318943. The reversal of 1018318919 is 9198138101.

It is a weak prime.

It is an emirp because it is prime and its reverse (9198138101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1018318919 is a prime.

It is a super-2 number, since 2×1018318919² = 2073946841586657122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1018318909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509159459 + 509159460.

It is an arithmetic number, because the mean of its divisors is an integer number (509159460).

Almost surely, 2^1018318919 is an apocalyptic number.

1018318919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1018318919 is an equidigital number, since it uses as much as digits as its factorization.

1018318919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 41.

The square root of 1018318919 is about 31911.1096485221. The cubic root of 1018318919 is about 1006.0693942595.

The spelling of 1018318919 in words is "one billion, eighteen million, three hundred eighteen thousand, nine hundred nineteen".