1210005165 has 16 divisors (see below), whose sum is σ = 1981032768. Its totient is φ = 630327936.

The previous prime is 1210005157. The next prime is 1210005187. The reversal of 1210005165 is 5615000121.

1210005165 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1210005165 - 2³ = 1210005157 is a prime.

It is a super-2 number, since 2×1210005165² = 2928224998653354450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 937344 + ... + 938633.

It is an arithmetic number, because the mean of its divisors is an integer number (123814548).

Almost surely, 2^1210005165 is an apocalyptic number.

1210005165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1210005165 is a deficient number, since it is larger than the sum of its proper divisors (771027603).

1210005165 is a wasteful number, since it uses less digits than its factorization.

1210005165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876028.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1210005165 is about 34785.1285034280. The cubic root of 1210005165 is about 1065.6037529726.

Adding to 1210005165 its reverse (5615000121), we get a palindrome (6825005286).

The spelling of 1210005165 in words is "one billion, two hundred ten million, five thousand, one hundred sixty-five".