1135254156 has 24 divisors (see below), whose sum is σ = 2649500784. Its totient is φ = 378336000.

The previous prime is 1135254139. The next prime is 1135254157. The reversal of 1135254156 is 6514525311.

It is not an unprimeable number, because it can be changed into a prime (1135254157) 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, 77256 + ... + 90768.

It is an arithmetic number, because the mean of its divisors is an integer number (110395866).

Almost surely, 2^1135254156 is an apocalyptic number.

It is an amenable number.

1135254156 is an abundant number, since it is smaller than the sum of its proper divisors (1514246628).

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

1135254156 is a wasteful number, since it uses less digits than its factorization.

1135254156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20521 (or 20519 counting only the distinct ones).

The product of its digits is 18000, while the sum is 33.

The square root of 1135254156 is about 33693.5328512758. The cubic root of 1135254156 is about 1043.1922856640.

Adding to 1135254156 its reverse (6514525311), we get a palindrome (7649779467).

The spelling of 1135254156 in words is "one billion, one hundred thirty-five million, two hundred fifty-four thousand, one hundred fifty-six".