13949680850 has 24 divisors (see below), whose sum is σ = 29653036608. Its totient is φ = 4782747600.

The previous prime is 13949680777. The next prime is 13949680859. The reversal of 13949680850 is 5808694931.

It is a junction number, because it is equal to n+sod(n) for n = 13949680792 and 13949680801.

It is not an unprimeable number, because it can be changed into a prime (13949680859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19927766 + ... + 19928465.

It is an arithmetic number, because the mean of its divisors is an integer number (1235543192).

Almost surely, 2^13949680850 is an apocalyptic number.

13949680850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13949680850 is an abundant number, since it is smaller than the sum of its proper divisors (15703355758).

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

13949680850 is a wasteful number, since it uses less digits than its factorization.

13949680850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39856250 (or 39856245 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 53.

The spelling of 13949680850 in words is "thirteen billion, nine hundred forty-nine million, six hundred eighty thousand, eight hundred fifty".