1156500156 has 72 divisors (see below), whose sum is σ = 3157494480. Its totient is φ = 328489728.

The previous prime is 1156500143. The next prime is 1156500173. The reversal of 1156500156 is 6510056511.

It is a super-2 number, since 2×1156500156² = 2674985221656048672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96040 + ... + 107408.

It is an arithmetic number, because the mean of its divisors is an integer number (43854090).

Almost surely, 2^1156500156 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 1156500156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1578747240).

1156500156 is an abundant number, since it is smaller than the sum of its proper divisors (2000994324).

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

1156500156 is a wasteful number, since it uses less digits than its factorization.

1156500156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11563 (or 11554 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 1156500156 is about 34007.3544398855. The cubic root of 1156500156 is about 1049.6598008988.

Adding to 1156500156 its reverse (6510056511), we get a palindrome (7666556667).

The spelling of 1156500156 in words is "one billion, one hundred fifty-six million, five hundred thousand, one hundred fifty-six".