1156745736 has 96 divisors (see below), whose sum is σ = 3285711000. Its totient is φ = 367137792.

The previous prime is 1156745731. The next prime is 1156745743. The reversal of 1156745736 is 6375476511.

1156745736 is a `hidden beast` number, since 1 + 1 + 5 + 6 + 74 + 573 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 696643236 + 460102500 = 26394^2 + 21450^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1156745691 and 1156745700.

It is not an unprimeable number, because it can be changed into a prime (1156745731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148630 + ... + 156218.

Almost surely, 2^1156745736 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 1156745736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1642855500).

1156745736 is an abundant number, since it is smaller than the sum of its proper divisors (2128965264).

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

1156745736 is a wasteful number, since it uses less digits than its factorization.

1156745736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7703 (or 7696 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The square root of 1156745736 is about 34010.9649377962. The cubic root of 1156745736 is about 1049.7340932105.

It can be divided in two parts, 1156745 and 736, that added together give a triangular number (1157481 = T₁₅₂₁).

The spelling of 1156745736 in words is "one billion, one hundred fifty-six million, seven hundred forty-five thousand, seven hundred thirty-six".