1165108280 has 96 divisors (see below), whose sum is σ = 3072459600. Its totient is φ = 396458496.

The previous prime is 1165108279. The next prime is 1165108283. The reversal of 1165108280 is 828015611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165108283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 266351 + ... + 270689.

Almost surely, 2^1165108280 is an apocalyptic number.

1165108280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1165108280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1536229800).

1165108280 is an abundant number, since it is smaller than the sum of its proper divisors (1907351320).

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

1165108280 is a wasteful number, since it uses less digits than its factorization.

1165108280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4501 (or 4490 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 32.

The square root of 1165108280 is about 34133.6824851934. The cubic root of 1165108280 is about 1052.2576607232.

The spelling of 1165108280 in words is "one billion, one hundred sixty-five million, one hundred eight thousand, two hundred eighty".