1165078361 has 8 divisors (see below), whose sum is σ = 1173873600. Its totient is φ = 1156307152.

The previous prime is 1165078351. The next prime is 1165078399. The reversal of 1165078361 is 1638705611.

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

It is a cyclic number.

It is not a de Polignac number, because 1165078361 - 2⁶ = 1165078297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1165078351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98006 + ... + 109248.

It is an arithmetic number, because the mean of its divisors is an integer number (146734200).

Almost surely, 2^1165078361 is an apocalyptic number.

It is an amenable number.

1165078361 is a deficient number, since it is larger than the sum of its proper divisors (8795239).

1165078361 is a wasteful number, since it uses less digits than its factorization.

1165078361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12015.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 1165078361 is about 34133.2442202613. The cubic root of 1165078361 is about 1052.2486536158.

The spelling of 1165078361 in words is "one billion, one hundred sixty-five million, seventy-eight thousand, three hundred sixty-one".