1161276379 has 8 divisors (see below), whose sum is σ = 1177767360. Its totient is φ = 1144830336.

The previous prime is 1161276373. The next prime is 1161276397. The reversal of 1161276379 is 9736721611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1161276379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161276373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42627 + ... + 64339.

It is an arithmetic number, because the mean of its divisors is an integer number (147220920).

Almost surely, 2^1161276379 is an apocalyptic number.

1161276379 is a deficient number, since it is larger than the sum of its proper divisors (16490981).

1161276379 is an equidigital number, since it uses as much as digits as its factorization.

1161276379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22469.

The product of its digits is 95256, while the sum is 43.

The square root of 1161276379 is about 34077.5054691508. The cubic root of 1161276379 is about 1051.1028107801.

The spelling of 1161276379 in words is "one billion, one hundred sixty-one million, two hundred seventy-six thousand, three hundred seventy-nine".