13903788749 has 4 divisors (see below), whose sum is σ = 13904025180. Its totient is φ = 13903552320.

The previous prime is 13903788737. The next prime is 13903788751. The reversal of 13903788749 is 94788730931.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5270034025 + 8633754724 = 72595^2 + 92918^2 .

It is a cyclic number.

It is not a de Polignac number, because 13903788749 - 2²⁴ = 13887011533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13903788779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46469 + ... + 173109.

It is an arithmetic number, because the mean of its divisors is an integer number (3476006295).

Almost surely, 2^13903788749 is an apocalyptic number.

It is an amenable number.

13903788749 is a deficient number, since it is larger than the sum of its proper divisors (236431).

13903788749 is a wasteful number, since it uses less digits than its factorization.

13903788749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236430.

The product of its (nonzero) digits is 9144576, while the sum is 59.

The spelling of 13903788749 in words is "thirteen billion, nine hundred three million, seven hundred eighty-eight thousand, seven hundred forty-nine".