13893737809 has 4 divisors (see below), whose sum is σ = 15878557504. Its totient is φ = 11908918116.

The previous prime is 13893737797. The next prime is 13893737839. The reversal of 13893737809 is 90873739831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13893737809 - 2¹⁵ = 13893705041 is a prime.

It is a super-3 number, since 3×13893737809³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13893737839) 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, 992409837 + ... + 992409850.

It is an arithmetic number, because the mean of its divisors is an integer number (3969639376).

Almost surely, 2^13893737809 is an apocalyptic number.

It is an amenable number.

13893737809 is a deficient number, since it is larger than the sum of its proper divisors (1984819695).

13893737809 is an equidigital number, since it uses as much as digits as its factorization.

13893737809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984819694.

The product of its (nonzero) digits is 6858432, while the sum is 58.

The spelling of 13893737809 in words is "thirteen billion, eight hundred ninety-three million, seven hundred thirty-seven thousand, eight hundred nine".