1183145136 has 40 divisors (see below), whose sum is σ = 3099515904. Its totient is φ = 388825920.

The previous prime is 1183145059. The next prime is 1183145149. The reversal of 1183145136 is 6315413811.

It is a junction number, because it is equal to n+sod(n) for n = 1183145097 and 1183145106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170176 + ... + 176991.

Almost surely, 2^1183145136 is an apocalyptic number.

1183145136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1183145136 is an abundant number, since it is smaller than the sum of its proper divisors (1916370768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1183145136 is a wasteful number, since it uses less digits than its factorization.

1183145136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347249 (or 347243 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 1183145136 is about 34396.8768349686. The cubic root of 1183145136 is about 1057.6598237167.

Adding to 1183145136 its reverse (6315413811), we get a palindrome (7498558947).

The spelling of 1183145136 in words is "one billion, one hundred eighty-three million, one hundred forty-five thousand, one hundred thirty-six".