13880360749 has 4 divisors (see below), whose sum is σ = 13880670300. Its totient is φ = 13880051200.

The previous prime is 13880360743. The next prime is 13880360761. The reversal of 13880360749 is 94706308831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94706308831 = 17 ⋅5570959343.

It can be written as a sum of positive squares in 2 ways, for example, as 10667171524 + 3213189225 = 103282^2 + 56685^2 .

It is a cyclic number.

It is not a de Polignac number, because 13880360749 - 2¹³ = 13880352557 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 (13880360743) 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, 73174 + ... + 181975.

It is an arithmetic number, because the mean of its divisors is an integer number (3470167575).

Almost surely, 2^13880360749 is an apocalyptic number.

It is an amenable number.

13880360749 is a deficient number, since it is larger than the sum of its proper divisors (309551).

13880360749 is an equidigital number, since it uses as much as digits as its factorization.

13880360749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309550.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 13880360749 in words is "thirteen billion, eight hundred eighty million, three hundred sixty thousand, seven hundred forty-nine".