1165316790 has 64 divisors (see below), whose sum is σ = 3081307392. Its totient is φ = 279696000.

The previous prime is 1165316749. The next prime is 1165316791. The reversal of 1165316790 is 976135611.

It is a happy number.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165316791) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15849 + ... + 50811.

It is an arithmetic number, because the mean of its divisors is an integer number (48145428).

Almost surely, 2^1165316790 is an apocalyptic number.

1165316790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1165316790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1540653696).

1165316790 is an abundant number, since it is smaller than the sum of its proper divisors (1915990602).

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

1165316790 is a wasteful number, since it uses less digits than its factorization.

1165316790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35085.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 1165316790 is about 34136.7366630145. The cubic root of 1165316790 is about 1052.3204283250.

It can be divided in two parts, 116531 and 6790, that added together give a palindrome (123321).

The spelling of 1165316790 in words is "one billion, one hundred sixty-five million, three hundred sixteen thousand, seven hundred ninety".