1861486374276 has 96 divisors (see below), whose sum is σ = 4957124928000. Its totient is φ = 603650444544.

The previous prime is 1861486374257. The next prime is 1861486374277. The reversal of 1861486374276 is 6724736841681.

1861486374276 is a `hidden beast` number, since 1 + 8 + 6 + 148 + 63 + 7 + 427 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (1861486374277) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38693205 + ... + 38741283.

It is an arithmetic number, because the mean of its divisors is an integer number (51636718000).

Almost surely, 2^{1861486374276} 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 1861486374276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2478562464000).

1861486374276 is an abundant number, since it is smaller than the sum of its proper divisors (3095638553724).

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

1861486374276 is a wasteful number, since it uses less digits than its factorization.

1861486374276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57818 (or 57810 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 63.

The spelling of 1861486374276 in words is "one trillion, eight hundred sixty-one billion, four hundred eighty-six million, three hundred seventy-four thousand, two hundred seventy-six".