9874417781 has 16 divisors (see below), whose sum is σ = 10561161600. Its totient is φ = 9204979968.

The previous prime is 9874417769. The next prime is 9874417783. The reversal of 9874417781 is 1877144789.

9874417781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9874417781 - 2¹⁸ = 9874155637 is a prime.

It is a super-2 number, since 2×9874417781² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9874417783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 600785 + ... + 617001.

It is an arithmetic number, because the mean of its divisors is an integer number (660072600).

Almost surely, 2^9874417781 is an apocalyptic number.

It is an amenable number.

9874417781 is a deficient number, since it is larger than the sum of its proper divisors (686743819).

9874417781 is a wasteful number, since it uses less digits than its factorization.

9874417781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16748.

The product of its digits is 3161088, while the sum is 56.

The square root of 9874417781 is about 99370.1050668661. The cubic root of 9874417781 is about 2145.3780488224.

The spelling of 9874417781 in words is "nine billion, eight hundred seventy-four million, four hundred seventeen thousand, seven hundred eighty-one".