1156811208 has 96 divisors (see below), whose sum is σ = 3371025600. Its totient is φ = 329847168.

The previous prime is 1156811203. The next prime is 1156811209. The reversal of 1156811208 is 8021186511.

It is not an unprimeable number, because it can be changed into a prime (1156811203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1042558 + ... + 1043666.

It is an arithmetic number, because the mean of its divisors is an integer number (35114850).

Almost surely, 2^1156811208 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 1156811208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1685512800).

1156811208 is an abundant number, since it is smaller than the sum of its proper divisors (2214214392).

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

1156811208 is a wasteful number, since it uses less digits than its factorization.

1156811208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019 (or 2008 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 33.

The square root of 1156811208 is about 34011.9274372976. The cubic root of 1156811208 is about 1049.7538978779.

Adding to 1156811208 its reverse (8021186511), we get a palindrome (9177997719).

The spelling of 1156811208 in words is "one billion, one hundred fifty-six million, eight hundred eleven thousand, two hundred eight".