1115151166 has 4 divisors (see below), whose sum is σ = 1672726752. Its totient is φ = 557575582.

The previous prime is 1115151151. The next prime is 1115151197. The reversal of 1115151166 is 6611515111.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278787790 + ... + 278787793.

It is an arithmetic number, because the mean of its divisors is an integer number (418181688).

Almost surely, 2^1115151166 is an apocalyptic number.

1115151166 is a deficient number, since it is larger than the sum of its proper divisors (557575586).

1115151166 is an equidigital number, since it uses as much as digits as its factorization.

1115151166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557575585.

The product of its digits is 900, while the sum is 28.

The square root of 1115151166 is about 33393.8791696922. The cubic root of 1115151166 is about 1036.9979892134.

Adding to 1115151166 its reverse (6611515111), we get a palindrome (7726666277).

The spelling of 1115151166 in words is "one billion, one hundred fifteen million, one hundred fifty-one thousand, one hundred sixty-six".