187394694966 has 64 divisors (see below), whose sum is σ = 426328531200. Its totient is φ = 60981959808.

The previous prime is 187394694937. The next prime is 187394694973. The reversal of 187394694966 is 669496493781.

187394694966 is a `hidden beast` number, since 1 + 8 + 73 + 9 + 4 + 69 + 496 + 6 = 666.

187394694966 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 187394694894 and 187394694903.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4924585 + ... + 4962491.

It is an arithmetic number, because the mean of its divisors is an integer number (6661383300).

Almost surely, 2^187394694966 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 187394694966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213164265600).

187394694966 is an abundant number, since it is smaller than the sum of its proper divisors (238933836234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

187394694966 is a wasteful number, since it uses less digits than its factorization.

187394694966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40090 (or 40084 counting only the distinct ones).

The product of its digits is 423263232, while the sum is 72.

The spelling of 187394694966 in words is "one hundred eighty-seven billion, three hundred ninety-four million, six hundred ninety-four thousand, nine hundred sixty-six".