1147081356 has 36 divisors (see below), whose sum is σ = 2914303392. Its totient is φ = 380417184.

The previous prime is 1147081333. The next prime is 1147081423. The reversal of 1147081356 is 6531807411.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1147081356.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 73780 + ... + 87963.

It is an arithmetic number, because the mean of its divisors is an integer number (80952872).

Almost surely, 2^1147081356 is an apocalyptic number.

It is an amenable number.

1147081356 is an abundant number, since it is smaller than the sum of its proper divisors (1767222036).

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

1147081356 is a wasteful number, since it uses less digits than its factorization.

1147081356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161950 (or 161945 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 1147081356 is about 33868.5895189038. The cubic root of 1147081356 is about 1046.8024739372.

Adding to 1147081356 its reverse (6531807411), we get a palindrome (7678888767).

The spelling of 1147081356 in words is "one billion, one hundred forty-seven million, eighty-one thousand, three hundred fifty-six".