1866747308076 has 192 divisors, whose sum is σ = 5682526080000. Its totient is φ = 518764704768.

The previous prime is 1866747308071. The next prime is 1866747308087. The reversal of 1866747308076 is 6708037476681.

It is a happy number.

1866747308076 is a `hidden beast` number, since 1 + 86 + 6 + 7 + 473 + 0 + 80 + 7 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (1866747308071) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 96969300 + ... + 96988548.

It is an arithmetic number, because the mean of its divisors is an integer number (29596490000).

Almost surely, 2^{1866747308076} 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 1866747308076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2841263040000).

1866747308076 is an abundant number, since it is smaller than the sum of its proper divisors (3815778771924).

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

1866747308076 is a wasteful number, since it uses less digits than its factorization.

1866747308076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22773 (or 22765 counting only the distinct ones).

The product of its (nonzero) digits is 56899584, while the sum is 63.

The spelling of 1866747308076 in words is "one trillion, eight hundred sixty-six billion, seven hundred forty-seven million, three hundred eight thousand, seventy-six".