13861897459 has 4 divisors (see below), whose sum is σ = 13961623480. Its totient is φ = 13762171440.

The previous prime is 13861897391. The next prime is 13861897463. The reversal of 13861897459 is 95479816831.

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

It is a cyclic number.

It is not a de Polignac number, because 13861897459 - 2⁹ = 13861896947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13861897397 and 13861897406.

It is not an unprimeable number, because it can be changed into a prime (13861897759) 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, 49862802 + ... + 49863079.

It is an arithmetic number, because the mean of its divisors is an integer number (3490405870).

Almost surely, 2^13861897459 is an apocalyptic number.

13861897459 is a deficient number, since it is larger than the sum of its proper divisors (99726021).

13861897459 is an equidigital number, since it uses as much as digits as its factorization.

13861897459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99726020.

The product of its digits is 13063680, while the sum is 61.

The spelling of 13861897459 in words is "thirteen billion, eight hundred sixty-one million, eight hundred ninety-seven thousand, four hundred fifty-nine".