1118253497 has 2 divisors, whose sum is σ = 1118253498. Its totient is φ = 1118253496.

The previous prime is 1118253481. The next prime is 1118253527. The reversal of 1118253497 is 7943528111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1097994496 + 20259001 = 33136^2 + 4501^2 .

It is an emirp because it is prime and its reverse (7943528111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1118253497 - 2⁴ = 1118253481 is a prime.

It is not a weakly prime, because it can be changed into another prime (1118253457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559126748 + 559126749.

It is an arithmetic number, because the mean of its divisors is an integer number (559126749).

Almost surely, 2^1118253497 is an apocalyptic number.

It is an amenable number.

1118253497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118253497 is an equidigital number, since it uses as much as digits as its factorization.

1118253497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 41.

The square root of 1118253497 is about 33440.2975016671. The cubic root of 1118253497 is about 1037.9587355809.

The spelling of 1118253497 in words is "one billion, one hundred eighteen million, two hundred fifty-three thousand, four hundred ninety-seven".