186445133964 has 96 divisors (see below), whose sum is σ = 496743287040. Its totient is φ = 60442187904.

The previous prime is 186445133813. The next prime is 186445133981. The reversal of 186445133964 is 469331544681.

It is a happy number.

186445133964 is a `hidden beast` number, since 1 + 8 + 6 + 445 + 133 + 9 + 64 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 186445133964.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 995899 + ... + 1168205.

It is an arithmetic number, because the mean of its divisors is an integer number (5174409240).

Almost surely, 2^186445133964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 186445133964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248371643520).

186445133964 is an abundant number, since it is smaller than the sum of its proper divisors (310298153076).

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

186445133964 is a wasteful number, since it uses less digits than its factorization.

186445133964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172596 (or 172588 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The spelling of 186445133964 in words is "one hundred eighty-six billion, four hundred forty-five million, one hundred thirty-three thousand, nine hundred sixty-four".