9861419381 has 8 divisors (see below), whose sum is σ = 11390730624. Its totient is φ = 8437577920.

The previous prime is 9861419377. The next prime is 9861419389. The reversal of 9861419381 is 1839141689.

9861419381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9861419381 - 2² = 9861419377 is a prime.

It is a super-2 number, since 2×9861419381² (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 (9861419389) 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 7 ways as a sum of consecutive naturals, for example, 26367245 + ... + 26367618.

It is an arithmetic number, because the mean of its divisors is an integer number (1423841328).

Almost surely, 2^9861419381 is an apocalyptic number.

It is an amenable number.

9861419381 is a deficient number, since it is larger than the sum of its proper divisors (1529311243).

9861419381 is a wasteful number, since it uses less digits than its factorization.

9861419381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52734891.

The product of its digits is 373248, while the sum is 50.

The square root of 9861419381 is about 99304.6795523756. The cubic root of 9861419381 is about 2144.4362641040.

The spelling of 9861419381 in words is "nine billion, eight hundred sixty-one million, four hundred nineteen thousand, three hundred eighty-one".