9887863381 has 8 divisors (see below), whose sum is σ = 10963592928. Its totient is φ = 8841606000.

The previous prime is 9887863331. The next prime is 9887863399. The reversal of 9887863381 is 1833687889.

9887863381 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 a de Polignac number, because none of the positive numbers 2^k-9887863381 is a prime.

It is a super-2 number, since 2×9887863381² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9887863331) 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, 7367335 + ... + 7368676.

It is an arithmetic number, because the mean of its divisors is an integer number (1370449116).

Almost surely, 2^9887863381 is an apocalyptic number.

It is an amenable number.

9887863381 is a deficient number, since it is larger than the sum of its proper divisors (1075729547).

9887863381 is a wasteful number, since it uses less digits than its factorization.

9887863381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14736083.

The product of its digits is 13934592, while the sum is 61.

The square root of 9887863381 is about 99437.7362021079. The cubic root of 9887863381 is about 2146.3513656924.

The spelling of 9887863381 in words is "nine billion, eight hundred eighty-seven million, eight hundred sixty-three thousand, three hundred eighty-one".