1878182040204 has 18 divisors (see below), whose sum is σ = 4747626823940. Its totient is φ = 626060680056.

The previous prime is 1878182040187. The next prime is 1878182040209. The reversal of 1878182040204 is 4020402818781.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1878182040204² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1878182040204.

It is not an unprimeable number, because it can be changed into a prime (1878182040209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26085861634 + ... + 26085861705.

Almost surely, 2^{1878182040204} is an apocalyptic number.

It is an amenable number.

1878182040204 is an abundant number, since it is smaller than the sum of its proper divisors (2869444783736).

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

1878182040204 is a wasteful number, since it uses less digits than its factorization.

1878182040204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52171723349 (or 52171723344 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 45.

Adding to 1878182040204 its reverse (4020402818781), we get a palindrome (5898584858985).

It can be divided in two parts, 1878182040 and 204, that added together give a square (1878182244 = 43338²).

The spelling of 1878182040204 in words is "one trillion, eight hundred seventy-eight billion, one hundred eighty-two million, forty thousand, two hundred four".