1080213165 has 20 divisors (see below), whose sum is σ = 1936382844. Its totient is φ = 576113472.

The previous prime is 1080213163. The next prime is 1080213179. The reversal of 1080213165 is 5613120801.

It can be written as a sum of positive squares in 2 ways, for example, as 462293001 + 617920164 = 21501^2 + 24858^2 .

It is not a de Polignac number, because 1080213165 - 2¹ = 1080213163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1080213163) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1333192 + ... + 1334001.

Almost surely, 2^1080213165 is an apocalyptic number.

1080213165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1080213165 is a deficient number, since it is larger than the sum of its proper divisors (856169679).

1080213165 is an equidigital number, since it uses as much as digits as its factorization.

1080213165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2667210 (or 2667201 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1080213165 is about 32866.5964924876. The cubic root of 1080213165 is about 1026.0530648660.

Adding to 1080213165 its reverse (5613120801), we get a palindrome (6693333966).

The spelling of 1080213165 in words is "one billion, eighty million, two hundred thirteen thousand, one hundred sixty-five".