785161081 has 8 divisors (see below), whose sum is σ = 790078464. Its totient is φ = 780252480.

The previous prime is 785161049. The next prime is 785161093. The reversal of 785161081 is 180161587.

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 785161081 - 2⁵ = 785161049 is a prime.

It is a super-2 number, since 2×785161081² = 1232955846234177122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 785161081.

It is not an unprimeable number, because it can be changed into a prime (785161781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295300 + ... + 297946.

It is an arithmetic number, because the mean of its divisors is an integer number (98759808).

Almost surely, 2^785161081 is an apocalyptic number.

It is an amenable number.

785161081 is a deficient number, since it is larger than the sum of its proper divisors (4917383).

785161081 is a wasteful number, since it uses less digits than its factorization.

785161081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391.

The product of its (nonzero) digits is 13440, while the sum is 37.

The square root of 785161081 is about 28020.7259185054. The cubic root of 785161081 is about 922.5422286126.

It can be divided in two parts, 78516 and 1081, that added together give a palindrome (79597).

The spelling of 785161081 in words is "seven hundred eighty-five million, one hundred sixty-one thousand, eighty-one".