1163145156 has 24 divisors (see below), whose sum is σ = 2714809440. Its totient is φ = 387600192.

The previous prime is 1163145127. The next prime is 1163145169. The reversal of 1163145156 is 6515413611.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34480 + ... + 59288.

It is an arithmetic number, because the mean of its divisors is an integer number (113117060).

Almost surely, 2^1163145156 is an apocalyptic number.

It is an amenable number.

1163145156 is an abundant number, since it is smaller than the sum of its proper divisors (1551664284).

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

1163145156 is a wasteful number, since it uses less digits than its factorization.

1163145156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28723 (or 28721 counting only the distinct ones).

The product of its digits is 10800, while the sum is 33.

The square root of 1163145156 is about 34104.9139567893. The cubic root of 1163145156 is about 1051.6663355554. Note that the first 3 decimals are identical.

Adding to 1163145156 its reverse (6515413611), we get a palindrome (7678558767).

The spelling of 1163145156 in words is "one billion, one hundred sixty-three million, one hundred forty-five thousand, one hundred fifty-six".