1816174994808 has 32 divisors (see below), whose sum is σ = 4807522046160. Its totient is φ = 569780390400.

The previous prime is 1816174994801. The next prime is 1816174994839. The reversal of 1816174994808 is 8084994716181.

It is a super-2 number, since 2×1816174994808² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1816174994801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2225704243 + ... + 2225705058.

Almost surely, 2^{1816174994808} is an apocalyptic number.

It is an amenable number.

1816174994808 is an abundant number, since it is smaller than the sum of its proper divisors (2991347051352).

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

1816174994808 is a wasteful number, since it uses less digits than its factorization.

1816174994808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4451409327 (or 4451409323 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 66.

The spelling of 1816174994808 in words is "one trillion, eight hundred sixteen billion, one hundred seventy-four million, nine hundred ninety-four thousand, eight hundred eight".