1161361385 has 8 divisors (see below), whose sum is σ = 1402863936. Its totient is φ = 922935600.

The previous prime is 1161361361. The next prime is 1161361393. The reversal of 1161361385 is 5831631611.

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

It is not a de Polignac number, because 1161361385 - 2⁶ = 1161361321 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 768359 + ... + 769868.

It is an arithmetic number, because the mean of its divisors is an integer number (175357992).

Almost surely, 2^1161361385 is an apocalyptic number.

It is an amenable number.

1161361385 is a deficient number, since it is larger than the sum of its proper divisors (241502551).

1161361385 is a wasteful number, since it uses less digits than its factorization.

1161361385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538383.

The product of its digits is 12960, while the sum is 35.

The square root of 1161361385 is about 34078.7526913765. The cubic root of 1161361385 is about 1051.1284572346.

Adding to 1161361385 its reverse (5831631611), we get a palindrome (6992992996).

The spelling of 1161361385 in words is "one billion, one hundred sixty-one million, three hundred sixty-one thousand, three hundred eighty-five".