181000564049 has 8 divisors (see below), whose sum is σ = 187818472512. Its totient is φ = 174301228080.

The previous prime is 181000564037. The next prime is 181000564103. The reversal of 181000564049 is 940465000181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 181000564049 - 2¹² = 181000559953 is a prime.

It is a super-2 number, since 2×181000564049² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (181000164049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29640014 + ... + 29646119.

It is an arithmetic number, because the mean of its divisors is an integer number (23477309064).

Almost surely, 2^181000564049 is an apocalyptic number.

It is an amenable number.

181000564049 is a deficient number, since it is larger than the sum of its proper divisors (6817908463).

181000564049 is an equidigital number, since it uses as much as digits as its factorization.

181000564049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59286247.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 181000564049 in words is "one hundred eighty-one billion, five hundred sixty-four thousand, forty-nine".