13858436109 has 8 divisors (see below), whose sum is σ = 21117616960. Its totient is φ = 7919106336.

The previous prime is 13858436089. The next prime is 13858436129. The reversal of 13858436109 is 90163485831.

It is an interprime number because it is at equal distance from previous prime (13858436089) and next prime (13858436129).

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

It is not a de Polignac number, because 13858436109 - 2⁹ = 13858435597 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 (13858436129) 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, 329962744 + ... + 329962785.

It is an arithmetic number, because the mean of its divisors is an integer number (2639702120).

Almost surely, 2^13858436109 is an apocalyptic number.

It is an amenable number.

13858436109 is a deficient number, since it is larger than the sum of its proper divisors (7259180851).

13858436109 is an equidigital number, since it uses as much as digits as its factorization.

13858436109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659925539.

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 13858436109 in words is "thirteen billion, eight hundred fifty-eight million, four hundred thirty-six thousand, one hundred nine".