11954633819 has 8 divisors (see below), whose sum is σ = 12358957440. Its totient is φ = 11551478400.

The previous prime is 11954633813. The next prime is 11954633827. The reversal of 11954633819 is 91833645911.

11954633819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11954633819 - 2²⁰ = 11953585243 is a prime.

It is a super-2 number, since 2×11954633819² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11954633813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271214 + ... + 312195.

It is an arithmetic number, because the mean of its divisors is an integer number (1544869680).

Almost surely, 2^11954633819 is an apocalyptic number.

11954633819 is a deficient number, since it is larger than the sum of its proper divisors (404323621).

11954633819 is an equidigital number, since it uses as much as digits as its factorization.

11954633819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584101.

The product of its digits is 699840, while the sum is 50.

The spelling of 11954633819 in words is "eleven billion, nine hundred fifty-four million, six hundred thirty-three thousand, eight hundred nineteen".