180345913 has 12 divisors (see below), whose sum is σ = 201445488. Its totient is φ = 160119960.

The previous prime is 180345899. The next prime is 180345917. The reversal of 180345913 is 319543081.

It is a de Polignac number, because none of the positive numbers 2^k-180345913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180345917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15906 + ... + 24772.

It is an arithmetic number, because the mean of its divisors is an integer number (16787124).

Almost surely, 2^180345913 is an apocalyptic number.

It is an amenable number.

180345913 is a deficient number, since it is larger than the sum of its proper divisors (21099575).

180345913 is an equidigital number, since it uses as much as digits as its factorization.

180345913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8964 (or 8921 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 180345913 is about 13429.2930938304. The cubic root of 180345913 is about 564.9830709941.

Adding to 180345913 its reverse (319543081), we get a palindrome (499888994).

The spelling of 180345913 in words is "one hundred eighty million, three hundred forty-five thousand, nine hundred thirteen".