3640184038181 has 8 divisors (see below), whose sum is σ = 3761968745304. Its totient is φ = 3519970746880.

The previous prime is 3640184038147. The next prime is 3640184038201. The reversal of 3640184038181 is 1818304810463.

3640184038181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1498077025 + 3638685961156 = 38705^2 + 1907534^2 .

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 3640184038181 - 2¹⁰ = 3640184037157 is a prime.

It is a super-2 number, since 2×3640184038181² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640184032181) 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, 392849246 + ... + 392858511.

It is an arithmetic number, because the mean of its divisors is an integer number (470246093163).

Almost surely, 2^{3640184038181} is an apocalyptic number.

It is an amenable number.

3640184038181 is a deficient number, since it is larger than the sum of its proper divisors (121784707123).

3640184038181 is a wasteful number, since it uses less digits than its factorization.

3640184038181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785707911.

The product of its (nonzero) digits is 442368, while the sum is 47.

The spelling of 3640184038181 in words is "three trillion, six hundred forty billion, one hundred eighty-four million, thirty-eight thousand, one hundred eighty-one".