181671036 has 96 divisors (see below), whose sum is σ = 458422272. Its totient is φ = 55883520.

The previous prime is 181671031. The next prime is 181671053. The reversal of 181671036 is 630176181.

It is a junction number, because it is equal to n+sod(n) for n = 181670988 and 181671006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181671031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 922090 + ... + 922286.

It is an arithmetic number, because the mean of its divisors is an integer number (4775232).

Almost surely, 2^181671036 is an apocalyptic number.

It is an amenable number.

181671036 is an abundant number, since it is smaller than the sum of its proper divisors (276751236).

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

181671036 is a wasteful number, since it uses less digits than its factorization.

181671036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 181671036 is about 13478.5398318957. The cubic root of 181671036 is about 566.3634660953.

The spelling of 181671036 in words is "one hundred eighty-one million, six hundred seventy-one thousand, thirty-six".