994210873633 has 4 divisors (see below), whose sum is σ = 994213176340. Its totient is φ = 994208570928.

The previous prime is 994210873631. The next prime is 994210873657. The reversal of 994210873633 is 336378012499.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6618147904 + 987592725729 = 81352^2 + 993777^2 .

It is a 3-Lehmer number, since φ(994210873633) divides (994210873633-1)³.

It is a cyclic number.

It is not a de Polignac number, because 994210873633 - 2¹ = 994210873631 is a prime.

It is a super-2 number, since 2×994210873633² (a number of 25 digits) contains 22 as substring.

It is a deceptive number, since it divides R_994210873632.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (994210873631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287838 + ... + 1439191.

It is an arithmetic number, because the mean of its divisors is an integer number (248553294085).

It is a Poulet number, since it divides 2^994210873632-1.

Almost surely, 2^994210873633 is an apocalyptic number.

994210873633 is the 575677-th octagonal number.

It is an amenable number.

994210873633 is a deficient number, since it is larger than the sum of its proper divisors (2302707).

994210873633 is a wasteful number, since it uses less digits than its factorization.

994210873633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2302706.

The product of its (nonzero) digits is 5878656, while the sum is 55.

The spelling of 994210873633 in words is "nine hundred ninety-four billion, two hundred ten million, eight hundred seventy-three thousand, six hundred thirty-three".