181378884996 has 27 divisors (see below), whose sum is σ = 458491974213. Its totient is φ = 60458776560.

The previous prime is 181378884983. The next prime is 181378885021. The reversal of 181378884996 is 699488873181.

The square root of 181378884996 is 425886.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 179086390596 + 2292494400 = 423186^2 + 47880^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2519826 + ... + 2590806.

Almost surely, 2^181378884996 is an apocalyptic number.

181378884996 is the 425886-th square number.

It is an amenable number.

181378884996 is an abundant number, since it is smaller than the sum of its proper divisors (277113089217).

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

181378884996 is an frugal number, since it uses more digits than its factorization.

181378884996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141972 (or 70986 counting only the distinct ones).

The product of its digits is 167215104, while the sum is 72.

The spelling of 181378884996 in words is "one hundred eighty-one billion, three hundred seventy-eight million, eight hundred eighty-four thousand, nine hundred ninety-six".