1118149873 has 2 divisors, whose sum is σ = 1118149874. Its totient is φ = 1118149872.

The previous prime is 1118149871. The next prime is 1118149889. The reversal of 1118149873 is 3789418111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 679540624 + 438609249 = 26068^2 + 20943^2 .

It is an emirp because it is prime and its reverse (3789418111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1118149873 - 2¹ = 1118149871 is a prime.

It is a super-2 number, since 2×1118149873² = 2500518276979832258, which contains 22 as substring.

Together with 1118149871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1118149871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559074936 + 559074937.

It is an arithmetic number, because the mean of its divisors is an integer number (559074937).

Almost surely, 2^1118149873 is an apocalyptic number.

It is an amenable number.

1118149873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118149873 is an equidigital number, since it uses as much as digits as its factorization.

1118149873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 43.

The square root of 1118149873 is about 33438.7480776419. The cubic root of 1118149873 is about 1037.9266734534.

The spelling of 1118149873 in words is "one billion, one hundred eighteen million, one hundred forty-nine thousand, eight hundred seventy-three".