1133145197 has 4 divisors (see below), whose sum is σ = 1133443296. Its totient is φ = 1132847100.

The previous prime is 1133145157. The next prime is 1133145227. The reversal of 1133145197 is 7915413311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1133145197 - 2¹² = 1133141101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133145107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143273 + ... + 150974.

It is an arithmetic number, because the mean of its divisors is an integer number (283360824).

Almost surely, 2^1133145197 is an apocalyptic number.

It is an amenable number.

1133145197 is a deficient number, since it is larger than the sum of its proper divisors (298099).

1133145197 is an equidigital number, since it uses as much as digits as its factorization.

1133145197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298098.

The product of its digits is 11340, while the sum is 35.

The square root of 1133145197 is about 33662.2221043115. Note that the first 3 decimals coincide. The cubic root of 1133145197 is about 1042.5459066137.

The spelling of 1133145197 in words is "one billion, one hundred thirty-three million, one hundred forty-five thousand, one hundred ninety-seven".