13990549648 has 20 divisors (see below), whose sum is σ = 27179373628. Its totient is φ = 6976517760.

The previous prime is 13990549633. The next prime is 13990549649. The reversal of 13990549648 is 84694509931.

It can be written as a sum of positive squares in 2 ways, for example, as 9640883344 + 4349666304 = 98188^2 + 65952^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13990549592 and 13990549601.

It is not an unprimeable number, because it can be changed into a prime (13990549649) 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, 1166163 + ... + 1178098.

Almost surely, 2^13990549648 is an apocalyptic number.

It is an amenable number.

13990549648 is a deficient number, since it is larger than the sum of its proper divisors (13188823980).

13990549648 is a wasteful number, since it uses less digits than its factorization.

13990549648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344642 (or 2344636 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 58.

The spelling of 13990549648 in words is "thirteen billion, nine hundred ninety million, five hundred forty-nine thousand, six hundred forty-eight".