3994018445653 has 32 divisors (see below), whose sum is σ = 4275069235200. Its totient is φ = 3718287949824.

The previous prime is 3994018445579. The next prime is 3994018445663. The reversal of 3994018445653 is 3565448104993.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3994018445653 - 2²⁹ = 3993481574741 is a prime.

It is a super-2 number, since 2×3994018445653² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3994018445591 and 3994018445600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3994018445663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1241533501 + ... + 1241536717.

It is an arithmetic number, because the mean of its divisors is an integer number (133595913600).

Almost surely, 2^{3994018445653} is an apocalyptic number.

It is an amenable number.

3994018445653 is a deficient number, since it is larger than the sum of its proper divisors (281050789547).

3994018445653 is a wasteful number, since it uses less digits than its factorization.

3994018445653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4909.

The product of its (nonzero) digits is 55987200, while the sum is 61.

The spelling of 3994018445653 in words is "three trillion, nine hundred ninety-four billion, eighteen million, four hundred forty-five thousand, six hundred fifty-three".