11861950318 has 8 divisors (see below), whose sum is σ = 17794719000. Its totient is φ = 5930377320.

The previous prime is 11861950313. The next prime is 11861950327. The reversal of 11861950318 is 81305916811.

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

It is a super-2 number, since 2×11861950318² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11861950313) 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, 273693 + ... + 314056.

It is an arithmetic number, because the mean of its divisors is an integer number (2224339875).

Almost surely, 2^11861950318 is an apocalyptic number.

11861950318 is a deficient number, since it is larger than the sum of its proper divisors (5932768682).

11861950318 is a wasteful number, since it uses less digits than its factorization.

11861950318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597842.

The product of its (nonzero) digits is 51840, while the sum is 43.

The spelling of 11861950318 in words is "eleven billion, eight hundred sixty-one million, nine hundred fifty thousand, three hundred eighteen".