181000564048 has 10 divisors (see below), whose sum is σ = 350688592874. Its totient is φ = 90500282016.

The previous prime is 181000564037. The next prime is 181000564103. The reversal of 181000564048 is 840465000181.

It can be written as a sum of positive squares in only one way, i.e., 138437573184 + 42562990864 = 372072^2 + 206308^2 .

It is a super-2 number, since 2×181000564048² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 181000563998 and 181000564016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5656267611 + ... + 5656267642.

Almost surely, 2^181000564048 is an apocalyptic number.

It is an amenable number.

181000564048 is a deficient number, since it is larger than the sum of its proper divisors (169688028826).

181000564048 is a wasteful number, since it uses less digits than its factorization.

181000564048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11312535261 (or 11312535255 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The spelling of 181000564048 in words is "one hundred eighty-one billion, five hundred sixty-four thousand, forty-eight".