1861616182076 has 12 divisors (see below), whose sum is σ = 3723232364208. Its totient is φ = 797835506592.

The previous prime is 1861616182061. The next prime is 1861616182081. The reversal of 1861616182076 is 6702816161681.

It is a happy number.

1861616182076 is an admirable number.

It is a super-2 number, since 2×1861616182076² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33243146081 + ... + 33243146136.

It is an arithmetic number, because the mean of its divisors is an integer number (310269363684).

Almost surely, 2^{1861616182076} is an apocalyptic number.

It is an amenable number.

1861616182076 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1861616182076 is a wasteful number, since it uses less digits than its factorization.

1861616182076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66486292228 (or 66486292226 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 53.

The spelling of 1861616182076 in words is "one trillion, eight hundred sixty-one billion, six hundred sixteen million, one hundred eighty-two thousand, seventy-six".