15318481841 has 8 divisors (see below), whose sum is σ = 16722811560. Its totient is φ = 13946435712.

The previous prime is 15318481817. The next prime is 15318481861. The reversal of 15318481841 is 14818481351.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 170041600 + 15148440241 = 13040^2 + 123079^2 .

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 15318481841 - 2³⁰ = 14244740017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15318481792 and 15318481801.

It is not an unprimeable number, because it can be changed into a prime (15318481861) 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, 8069906 + ... + 8071803.

It is an arithmetic number, because the mean of its divisors is an integer number (2090351445).

Almost surely, 2^15318481841 is an apocalyptic number.

It is an amenable number.

15318481841 is a deficient number, since it is larger than the sum of its proper divisors (1404329719).

15318481841 is a wasteful number, since it uses less digits than its factorization.

15318481841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16141795.

The product of its digits is 122880, while the sum is 44.

The spelling of 15318481841 in words is "fifteen billion, three hundred eighteen million, four hundred eighty-one thousand, eight hundred forty-one".