994018275253 has 4 divisors (see below), whose sum is σ = 994020390220. Its totient is φ = 994016160288.

The previous prime is 994018275167. The next prime is 994018275277. The reversal of 994018275253 is 352572810499.

994018275253 is a nontrivial binomial coefficient, being equal to C(1409978, 2).

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 46942855569 + 947075419684 = 216663^2 + 973178^2 .

It is a 3-Lehmer number, since φ(994018275253) divides (994018275253-1)³.

It is a cyclic number.

It is not a de Polignac number, because 994018275253 - 2²⁵ = 993984720821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 994018275194 and 994018275203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (994018275353) 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 3 ways as a sum of consecutive naturals, for example, 1 + ... + 1409977.

It is an arithmetic number, because the mean of its divisors is an integer number (248505097555).

It is a Poulet number, since it divides 2^994018275252-1.

Almost surely, 2^994018275253 is an apocalyptic number.

994018275253 is the 1409977-th triangular number and also the 704989-th hexagonal number.

994018275253 is the 469993-rd centered nonagonal number.

It is an amenable number.

994018275253 is a deficient number, since it is larger than the sum of its proper divisors (2114967).

994018275253 is a wasteful number, since it uses less digits than its factorization.

994018275253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114966.

The product of its (nonzero) digits is 5443200, while the sum is 55.

The spelling of 994018275253 in words is "nine hundred ninety-four billion, eighteen million, two hundred seventy-five thousand, two hundred fifty-three".