9894902138 has 16 divisors (see below), whose sum is σ = 16749992160. Its totient is φ = 4342590000.

The previous prime is 9894902081. The next prime is 9894902141. The reversal of 9894902138 is 8312094989.

9894902138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 9894902138.

It is an unprimeable number.

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, 7753988 + ... + 7755263.

It is an arithmetic number, because the mean of its divisors is an integer number (1046874510).

Almost surely, 2^9894902138 is an apocalyptic number.

9894902138 is a deficient number, since it is larger than the sum of its proper divisors (6855090022).

9894902138 is a wasteful number, since it uses less digits than its factorization.

9894902138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15509293.

The product of its (nonzero) digits is 1119744, while the sum is 53.

The square root of 9894902138 is about 99473.1226915090. The cubic root of 9894902138 is about 2146.8605441907.

The spelling of 9894902138 in words is "nine billion, eight hundred ninety-four million, nine hundred two thousand, one hundred thirty-eight".