9877494138 has 16 divisors (see below), whose sum is σ = 20214407136. Its totient is φ = 3215928240.

The previous prime is 9877494127. The next prime is 9877494157. The reversal of 9877494138 is 8314947789.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19142173 + ... + 19142688.

It is an arithmetic number, because the mean of its divisors is an integer number (1263400446).

Almost surely, 2^9877494138 is an apocalyptic number.

9877494138 is an abundant number, since it is smaller than the sum of its proper divisors (10336912998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9877494138 is a wasteful number, since it uses less digits than its factorization.

9877494138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38284909.

The product of its digits is 12192768, while the sum is 60.

The square root of 9877494138 is about 99385.5831496702. The cubic root of 9877494138 is about 2145.6008219061.

The spelling of 9877494138 in words is "nine billion, eight hundred seventy-seven million, four hundred ninety-four thousand, one hundred thirty-eight".