181843712404 has 6 divisors (see below), whose sum is σ = 318226496714. Its totient is φ = 90921856200.

The previous prime is 181843712399. The next prime is 181843712431. The reversal of 181843712404 is 404217348181.

It can be written as a sum of positive squares in only one way, i.e., 132679519504 + 49164192900 = 364252^2 + 221730^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22730464047 + ... + 22730464054.

Almost surely, 2^181843712404 is an apocalyptic number.

It is an amenable number.

181843712404 is a deficient number, since it is larger than the sum of its proper divisors (136382784310).

181843712404 is a wasteful number, since it uses less digits than its factorization.

181843712404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45460928105 (or 45460928103 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The spelling of 181843712404 in words is "one hundred eighty-one billion, eight hundred forty-three million, seven hundred twelve thousand, four hundred four".