11909318139 has 20 divisors (see below), whose sum is σ = 18056000424. Its totient is φ = 7821041184.

The previous prime is 11909318129. The next prime is 11909318149. The reversal of 11909318139 is 93181390911.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11909318129) and next prime (11909318149).

It is not a de Polignac number, because 11909318139 - 2⁹ = 11909317627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11909318094 and 11909318103.

It is not an unprimeable number, because it can be changed into a prime (11909318129) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1091802 + ... + 1102655.

Almost surely, 2^11909318139 is an apocalyptic number.

11909318139 is a deficient number, since it is larger than the sum of its proper divisors (6146682285).

11909318139 is an equidigital number, since it uses as much as digits as its factorization.

11909318139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194536 (or 2194527 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 45.

The spelling of 11909318139 in words is "eleven billion, nine hundred nine million, three hundred eighteen thousand, one hundred thirty-nine".