13895140639 has 8 divisors (see below), whose sum is σ = 14094622080. Its totient is φ = 13696422936.

The previous prime is 13895140631. The next prime is 13895140643. The reversal of 13895140639 is 93604159831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13895140639 - 2³ = 13895140631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13895140592 and 13895140601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13895140631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154237 + ... + 227110.

It is an arithmetic number, because the mean of its divisors is an integer number (1761827760).

Almost surely, 2^13895140639 is an apocalyptic number.

13895140639 is a deficient number, since it is larger than the sum of its proper divisors (199481441).

13895140639 is an equidigital number, since it uses as much as digits as its factorization.

13895140639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381869.

The product of its (nonzero) digits is 699840, while the sum is 49.

The spelling of 13895140639 in words is "thirteen billion, eight hundred ninety-five million, one hundred forty thousand, six hundred thirty-nine".