1156212356 has 12 divisors (see below), whose sum is σ = 2179015692. Its totient is φ = 533636448.

The previous prime is 1156212353. The next prime is 1156212383. The reversal of 1156212356 is 6532126511.

It can be written as a sum of positive squares in 2 ways, for example, as 428076100 + 728136256 = 20690^2 + 26984^2 .

It is not an unprimeable number, because it can be changed into a prime (1156212353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11117375 + ... + 11117478.

It is an arithmetic number, because the mean of its divisors is an integer number (181584641).

Almost surely, 2^1156212356 is an apocalyptic number.

It is an amenable number.

1156212356 is a deficient number, since it is larger than the sum of its proper divisors (1022803336).

1156212356 is a wasteful number, since it uses less digits than its factorization.

1156212356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22234870 (or 22234868 counting only the distinct ones).

The product of its digits is 10800, while the sum is 32.

The square root of 1156212356 is about 34003.1227389486. The cubic root of 1156212356 is about 1049.5727229013.

Adding to 1156212356 its reverse (6532126511), we get a palindrome (7688338867).

The spelling of 1156212356 in words is "one billion, one hundred fifty-six million, two hundred twelve thousand, three hundred fifty-six".