6454018993 has 2 divisors, whose sum is σ = 6454018994. Its totient is φ = 6454018992.

The previous prime is 6454018913. The next prime is 6454018999. The reversal of 6454018993 is 3998104546.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6305471649 + 148547344 = 79407^2 + 12188^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6454018993 is a prime.

It is a super-2 number, since 2×6454018993² = 83308722324009468098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6454018999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3227009496 + 3227009497.

It is an arithmetic number, because the mean of its divisors is an integer number (3227009497).

Almost surely, 2^6454018993 is an apocalyptic number.

It is an amenable number.

6454018993 is a deficient number, since it is larger than the sum of its proper divisors (1).

6454018993 is an equidigital number, since it uses as much as digits as its factorization.

6454018993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 49.

The square root of 6454018993 is about 80336.9092820977. The cubic root of 6454018993 is about 1861.8445294208.

The spelling of 6454018993 in words is "six billion, four hundred fifty-four million, eighteen thousand, nine hundred ninety-three".