994559780341 has 4 divisors (see below), whose sum is σ = 994561895884. Its totient is φ = 994557664800.

The previous prime is 994559780339. The next prime is 994559780393. The reversal of 994559780341 is 143087955499.

994559780341 is a nontrivial binomial coefficient, being equal to C(1410362, 2).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 143087955499 = 29 ⋅4934067431.

It can be written as a sum of positive squares in 2 ways, for example, as 58172616100 + 936387164241 = 241190^2 + 967671^2 .

It is a 3-Lehmer number, since φ(994559780341) divides (994559780341-1)³.

It is a cyclic number.

It is not a de Polignac number, because 994559780341 - 2¹ = 994559780339 is a prime.

It is a deceptive number, since it divides R_994559780340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (994559700341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 1410361.

It is an arithmetic number, because the mean of its divisors is an integer number (248640473971).

It is a Poulet number, since it divides 2^994559780340-1.

Almost surely, 2^994559780341 is an apocalyptic number.

994559780341 is the 1410361-st triangular number and also the 705181-st hexagonal number.

994559780341 is the 470121-st centered nonagonal number.

It is an amenable number.

994559780341 is a deficient number, since it is larger than the sum of its proper divisors (2115543).

994559780341 is a wasteful number, since it uses less digits than its factorization.

994559780341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115542.

The product of its (nonzero) digits is 48988800, while the sum is 64.

The spelling of 994559780341 in words is "nine hundred ninety-four billion, five hundred fifty-nine million, seven hundred eighty thousand, three hundred forty-one".