1018442393 has 2 divisors, whose sum is σ = 1018442394. Its totient is φ = 1018442392.

The previous prime is 1018442333. The next prime is 1018442407. The reversal of 1018442393 is 3932448101.

1018442393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 608460889 + 409981504 = 24667^2 + 20248^2 .

It is an emirp because it is prime and its reverse (3932448101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1018442393 - 2¹⁸ = 1018180249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1018442303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509221196 + 509221197.

It is an arithmetic number, because the mean of its divisors is an integer number (509221197).

Almost surely, 2^1018442393 is an apocalyptic number.

It is an amenable number.

1018442393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1018442393 is an equidigital number, since it uses as much as digits as its factorization.

1018442393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 1018442393 is about 31913.0442452612. The cubic root of 1018442393 is about 1006.1100555198.

The spelling of 1018442393 in words is "one billion, eighteen million, four hundred forty-two thousand, three hundred ninety-three".