13813620250 has 32 divisors (see below), whose sum is σ = 25869379536. Its totient is φ = 5523251200.

The previous prime is 13813620169. The next prime is 13813620259. The reversal of 13813620250 is 5202631831.

It can be written as a sum of positive squares in 8 ways, for example, as 1877402241 + 11936218009 = 43329^2 + 109253^2 .

It is a super-2 number, since 2×13813620250² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13813620259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 714714 + ... + 733786.

Almost surely, 2^13813620250 is an apocalyptic number.

13813620250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13813620250 is a deficient number, since it is larger than the sum of its proper divisors (12055759286).

13813620250 is a wasteful number, since it uses less digits than its factorization.

13813620250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21987 (or 21977 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 13813620250 in words is "thirteen billion, eight hundred thirteen million, six hundred twenty thousand, two hundred fifty".