13869049738 has 4 divisors (see below), whose sum is σ = 20803574610. Its totient is φ = 6934524868.

The previous prime is 13869049729. The next prime is 13869049739. The reversal of 13869049738 is 83794096831.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11480479609 + 2388570129 = 107147^2 + 48873^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (13869049739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3467262433 + ... + 3467262436.

Almost surely, 2^13869049738 is an apocalyptic number.

13869049738 is a deficient number, since it is larger than the sum of its proper divisors (6934524872).

13869049738 is an equidigital number, since it uses as much as digits as its factorization.

13869049738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6934524871.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 13869049738 in words is "thirteen billion, eight hundred sixty-nine million, forty-nine thousand, seven hundred thirty-eight".