13888622500 has 45 divisors (see below), whose sum is σ = 30384530869. Its totient is φ = 5553092000.

The previous prime is 13888622477. The next prime is 13888622509. The reversal of 13888622500 is 522688831.

The square root of 13888622500 is 117850.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 13550356836 + 338265664 = 116406^2 + 18392^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13888622509) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 5891322 + ... + 5893678.

Almost surely, 2^13888622500 is an apocalyptic number.

13888622500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13888622500 is the 117850-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13888622500

13888622500 is an abundant number, since it is smaller than the sum of its proper divisors (16495908369).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13888622500 is an frugal number, since it uses more digits than its factorization.

13888622500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4738 (or 2364 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The spelling of 13888622500 in words is "thirteen billion, eight hundred eighty-eight million, six hundred twenty-two thousand, five hundred".