11918443670 has 32 divisors (see below), whose sum is σ = 24596822016. Its totient is φ = 4073176800.

The previous prime is 11918443631. The next prime is 11918443679. The reversal of 11918443670 is 7634481911.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11918443679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251966 + ... + 295505.

It is an arithmetic number, because the mean of its divisors is an integer number (768650688).

Almost surely, 2^11918443670 is an apocalyptic number.

11918443670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11918443670 is an abundant number, since it is smaller than the sum of its proper divisors (12678378346).

11918443670 is a wasteful number, since it uses less digits than its factorization.

11918443670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547796.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 11918443670 in words is "eleven billion, nine hundred eighteen million, four hundred forty-three thousand, six hundred seventy".