181041004 has 48 divisors (see below), whose sum is σ = 340962048. Its totient is φ = 83914688.

The previous prime is 181040999. The next prime is 181041013. The reversal of 181041004 is 400140181.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 521559 + ... + 521905.

It is an arithmetic number, because the mean of its divisors is an integer number (7103376).

Almost surely, 2^181041004 is an apocalyptic number.

It is an amenable number.

181041004 is a deficient number, since it is larger than the sum of its proper divisors (159921044).

181041004 is a wasteful number, since it uses less digits than its factorization.

181041004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 181041004 is about 13455.1478624354. The cubic root of 181041004 is about 565.7079948990.

Adding to 181041004 its reverse (400140181), we get a palindrome (581181185).

The spelling of 181041004 in words is "one hundred eighty-one million, forty-one thousand, four".