13903844994 has 128 divisors (see below), whose sum is σ = 34034515200. Its totient is φ = 4180999680.

The previous prime is 13903844993. The next prime is 13903845037. The reversal of 13903844994 is 49944830931.

13903844994 is a `hidden beast` number, since 139 + 0 + 384 + 49 + 94 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 13903844994.

It is not an unprimeable number, because it can be changed into a prime (13903844993) 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 63 ways as a sum of consecutive naturals, for example, 12314622 + ... + 12315750.

It is an arithmetic number, because the mean of its divisors is an integer number (265894650).

Almost surely, 2^13903844994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13903844994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17017257600).

13903844994 is an abundant number, since it is smaller than the sum of its proper divisors (20130670206).

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

13903844994 is a wasteful number, since it uses less digits than its factorization.

13903844994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537 (or 1531 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The spelling of 13903844994 in words is "thirteen billion, nine hundred three million, eight hundred forty-four thousand, nine hundred ninety-four".