181434004 has 6 divisors (see below), whose sum is σ = 317509514. Its totient is φ = 90717000.

The previous prime is 181433957. The next prime is 181434017. The reversal of 181434004 is 400434181.

It can be written as a sum of positive squares in only one way, i.e., 162511504 + 18922500 = 12748^2 + 4350^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 181434004.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 22679247 + ... + 22679254.

Almost surely, 2^181434004 is an apocalyptic number.

It is an amenable number.

181434004 is a deficient number, since it is larger than the sum of its proper divisors (136075510).

181434004 is a wasteful number, since it uses less digits than its factorization.

181434004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45358505 (or 45358503 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 181434004 is about 13469.7440213242. The cubic root of 181434004 is about 566.1170413936.

Adding to 181434004 its reverse (400434181), we get a palindrome (581868185).

The spelling of 181434004 in words is "one hundred eighty-one million, four hundred thirty-four thousand, four".