1185513133 has 8 divisors (see below), whose sum is σ = 1357065920. Its totient is φ = 1014508800.

The previous prime is 1185513107. The next prime is 1185513143. The reversal of 1185513133 is 3313155811.

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 1185513133 - 2²⁵ = 1151958701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1185513095 and 1185513104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1185513143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132468 + ... + 141133.

It is an arithmetic number, because the mean of its divisors is an integer number (169633240).

Almost surely, 2^1185513133 is an apocalyptic number.

It is an amenable number.

1185513133 is a deficient number, since it is larger than the sum of its proper divisors (171552787).

1185513133 is an equidigital number, since it uses as much as digits as its factorization.

1185513133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274227.

The product of its digits is 5400, while the sum is 31.

The square root of 1185513133 is about 34431.2813151065. The cubic root of 1185513133 is about 1058.3649686095.

Adding to 1185513133 its reverse (3313155811), we get a palindrome (4498668944).

The spelling of 1185513133 in words is "one billion, one hundred eighty-five million, five hundred thirteen thousand, one hundred thirty-three".