1180020013 has 4 divisors (see below), whose sum is σ = 1197632320. Its totient is φ = 1162407708.

The previous prime is 1180020011. The next prime is 1180020073. The reversal of 1180020013 is 3100200811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1180020013 - 2¹ = 1180020011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1180020011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8806053 + ... + 8806186.

It is an arithmetic number, because the mean of its divisors is an integer number (299408080).

Almost surely, 2^1180020013 is an apocalyptic number.

It is an amenable number.

1180020013 is a deficient number, since it is larger than the sum of its proper divisors (17612307).

1180020013 is an equidigital number, since it uses as much as digits as its factorization.

1180020013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17612306.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1180020013 is about 34351.4193738774. The cubic root of 1180020013 is about 1056.7277792853.

Adding to 1180020013 its reverse (3100200811), we get a palindrome (4280220824).

It can be divided in two parts, 11800 and 20013, that added together give a palindrome (31813).

The spelling of 1180020013 in words is "one billion, one hundred eighty million, twenty thousand, thirteen".