1118188453 has 2 divisors, whose sum is σ = 1118188454. Its totient is φ = 1118188452.

The previous prime is 1118188427. The next prime is 1118188457. The reversal of 1118188453 is 3548818111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 776012449 + 342176004 = 27857^2 + 18498^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1118188453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1118188457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559094226 + 559094227.

It is an arithmetic number, because the mean of its divisors is an integer number (559094227).

Almost surely, 2^1118188453 is an apocalyptic number.

It is an amenable number.

1118188453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118188453 is an equidigital number, since it uses as much as digits as its factorization.

1118188453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30720, while the sum is 40.

The square root of 1118188453 is about 33439.3249483299. The cubic root of 1118188453 is about 1037.9386106578.

The spelling of 1118188453 in words is "one billion, one hundred eighteen million, one hundred eighty-eight thousand, four hundred fifty-three".