1116488491 has 2 divisors, whose sum is σ = 1116488492. Its totient is φ = 1116488490.

The previous prime is 1116488479. The next prime is 1116488497. The reversal of 1116488491 is 1948846111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1116488491 - 2¹⁷ = 1116357419 is a prime.

It is not a weakly prime, because it can be changed into another prime (1116488497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558244245 + 558244246.

It is an arithmetic number, because the mean of its divisors is an integer number (558244246).

Almost surely, 2^1116488491 is an apocalyptic number.

1116488491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1116488491 is an equidigital number, since it uses as much as digits as its factorization.

1116488491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 43.

The square root of 1116488491 is about 33413.8966748866. The cubic root of 1116488491 is about 1037.4123573520.

The spelling of 1116488491 in words is "one billion, one hundred sixteen million, four hundred eighty-eight thousand, four hundred ninety-one".