1118287253 has 2 divisors, whose sum is σ = 1118287254. Its totient is φ = 1118287252.

The previous prime is 1118287249. The next prime is 1118287279. The reversal of 1118287253 is 3527828111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 748186609 + 370100644 = 27353^2 + 19238^2 .

It is a cyclic number.

It is not a de Polignac number, because 1118287253 - 2² = 1118287249 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1118287153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559143626 + 559143627.

It is an arithmetic number, because the mean of its divisors is an integer number (559143627).

Almost surely, 2^1118287253 is an apocalyptic number.

It is an amenable number.

1118287253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118287253 is an equidigital number, since it uses as much as digits as its factorization.

1118287253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 38.

The square root of 1118287253 is about 33440.8022182483. The cubic root of 1118287253 is about 1037.9691795404.

The spelling of 1118287253 in words is "one billion, one hundred eighteen million, two hundred eighty-seven thousand, two hundred fifty-three".