9638217942 has 32 divisors (see below), whose sum is σ = 20130308352. Its totient is φ = 3070646304.

The previous prime is 9638217937. The next prime is 9638217971. The reversal of 9638217942 is 2497128369.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 153648 + ... + 207084.

It is an arithmetic number, because the mean of its divisors is an integer number (629072136).

Almost surely, 2^9638217942 is an apocalyptic number.

9638217942 is an abundant number, since it is smaller than the sum of its proper divisors (10492090410).

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

9638217942 is a wasteful number, since it uses less digits than its factorization.

9638217942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54772.

The product of its digits is 1306368, while the sum is 51.

The square root of 9638217942 is about 98174.4261098582. The cubic root of 9638217942 is about 2128.1337251020.

The spelling of 9638217942 in words is "nine billion, six hundred thirty-eight million, two hundred seventeen thousand, nine hundred forty-two".