2668383491 has 2 divisors, whose sum is σ = 2668383492. Its totient is φ = 2668383490.

The previous prime is 2668383413. The next prime is 2668383551. The reversal of 2668383491 is 1943838662.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2668383491 - 2¹⁸ = 2668121347 is a prime.

It is not a weakly prime, because it can be changed into another prime (2668383401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1334191745 + 1334191746.

It is an arithmetic number, because the mean of its divisors is an integer number (1334191746).

Almost surely, 2^2668383491 is an apocalyptic number.

2668383491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2668383491 is an equidigital number, since it uses as much as digits as its factorization.

2668383491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 50.

The square root of 2668383491 is about 51656.3983548989. The cubic root of 2668383491 is about 1387.0200797362.

The spelling of 2668383491 in words is "two billion, six hundred sixty-eight million, three hundred eighty-three thousand, four hundred ninety-one".