11841678349 has 4 divisors (see below), whose sum is σ = 11842418140. Its totient is φ = 11840938560.

The previous prime is 11841678319. The next prime is 11841678397. The reversal of 11841678349 is 94387614811.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4804985124 + 7036693225 = 69318^2 + 83885^2 .

It is a cyclic number.

It is not a de Polignac number, because 11841678349 - 2¹³ = 11841670157 is a prime.

It is a super-2 number, since 2×11841678349² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11841678296 and 11841678305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11841678319) 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, 345342 + ... + 378079.

It is an arithmetic number, because the mean of its divisors is an integer number (2960604535).

Almost surely, 2^11841678349 is an apocalyptic number.

It is an amenable number.

11841678349 is a deficient number, since it is larger than the sum of its proper divisors (739791).

11841678349 is an equidigital number, since it uses as much as digits as its factorization.

11841678349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739790.

The product of its digits is 1161216, while the sum is 52.

The spelling of 11841678349 in words is "eleven billion, eight hundred forty-one million, six hundred seventy-eight thousand, three hundred forty-nine".