1165213013 has 8 divisors (see below), whose sum is σ = 1196858208. Its totient is φ = 1133987184.

The previous prime is 1165212967. The next prime is 1165213061. The reversal of 1165213013 is 3103125611.

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 1165213013 - 2⁸ = 1165212757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1165213013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165293013) 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, 99206 + ... + 110327.

It is an arithmetic number, because the mean of its divisors is an integer number (149607276).

Almost surely, 2^1165213013 is an apocalyptic number.

It is an amenable number.

1165213013 is a deficient number, since it is larger than the sum of its proper divisors (31645195).

1165213013 is an equidigital number, since it uses as much as digits as its factorization.

1165213013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209683.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1165213013 is about 34135.2166098298. The cubic root of 1165213013 is about 1052.2891893521.

Adding to 1165213013 its reverse (3103125611), we get a palindrome (4268338624).

The spelling of 1165213013 in words is "one billion, one hundred sixty-five million, two hundred thirteen thousand, thirteen".