1156536156 has 48 divisors (see below), whose sum is σ = 2861129600. Its totient is φ = 362584512.

The previous prime is 1156536151. The next prime is 1156536223. The reversal of 1156536156 is 6516356511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156536151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13446 + ... + 49938.

Almost surely, 2^1156536156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1156536156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1430564800).

1156536156 is an abundant number, since it is smaller than the sum of its proper divisors (1704593444).

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

1156536156 is a wasteful number, since it uses less digits than its factorization.

1156536156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36658 (or 36656 counting only the distinct ones).

The product of its digits is 81000, while the sum is 39.

The square root of 1156536156 is about 34007.8837330405. The cubic root of 1156536156 is about 1049.6706921960.

The spelling of 1156536156 in words is "one billion, one hundred fifty-six million, five hundred thirty-six thousand, one hundred fifty-six".