2180403913 has 4 divisors (see below), whose sum is σ = 2186991568. Its totient is φ = 2173816260.

The previous prime is 2180403877. The next prime is 2180403917. The reversal of 2180403913 is 3193040812.

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 2180403913 - 2²¹ = 2178306761 is a prime.

It is a super-2 number, since 2×2180403913² = 9508322447651423138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2180403917) 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, 3293331 + ... + 3293992.

It is an arithmetic number, because the mean of its divisors is an integer number (546747892).

Almost surely, 2^2180403913 is an apocalyptic number.

It is an amenable number.

2180403913 is a deficient number, since it is larger than the sum of its proper divisors (6587655).

2180403913 is an equidigital number, since it uses as much as digits as its factorization.

2180403913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6587654.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 2180403913 is about 46694.7953523731. The cubic root of 2180403913 is about 1296.7183329231.

The spelling of 2180403913 in words is "two billion, one hundred eighty million, four hundred three thousand, nine hundred thirteen".