1151112209 has 8 divisors (see below), whose sum is σ = 1241958312. Its totient is φ = 1060594560.

The previous prime is 1151112197. The next prime is 1151112229. The reversal of 1151112209 is 9022111511.

It can be written as a sum of positive squares in 4 ways, for example, as 3025 + 1151109184 = 55^2 + 33928^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1151112209 - 2⁸ = 1151111953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151112229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74804 + ... + 88869.

It is an arithmetic number, because the mean of its divisors is an integer number (155244789).

Almost surely, 2^1151112209 is an apocalyptic number.

It is an amenable number.

1151112209 is a deficient number, since it is larger than the sum of its proper divisors (90846103).

1151112209 is a wasteful number, since it uses less digits than its factorization.

1151112209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164227.

The product of its (nonzero) digits is 180, while the sum is 23.

The square root of 1151112209 is about 33928.0445796689. The cubic root of 1151112209 is about 1048.0271978961.

The spelling of 1151112209 in words is "one billion, one hundred fifty-one million, one hundred twelve thousand, two hundred nine".