13721838490 has 36 divisors (see below), whose sum is σ = 26249721246. Its totient is φ = 5163497856.

The previous prime is 13721838469. The next prime is 13721838539. The reversal of 13721838490 is 9483812731.

13721838490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 13337247169 + 384591321 = 115487^2 + 19611^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13721838490.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6296221 + ... + 6298399.

Almost surely, 2^13721838490 is an apocalyptic number.

13721838490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13721838490 is a deficient number, since it is larger than the sum of its proper divisors (12527882756).

13721838490 is an frugal number, since it uses more digits than its factorization.

13721838490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4399 (or 2203 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 13721838490 in words is "thirteen billion, seven hundred twenty-one million, eight hundred thirty-eight thousand, four hundred ninety".