9631975442 has 4 divisors (see below), whose sum is σ = 14447963166. Its totient is φ = 4815987720.

The previous prime is 9631975433. The next prime is 9631975499. The reversal of 9631975442 is 2445791369.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9550957441 + 81018001 = 97729^2 + 9001^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2407993859 + ... + 2407993862.

Almost surely, 2^9631975442 is an apocalyptic number.

9631975442 is a deficient number, since it is larger than the sum of its proper divisors (4815987724).

9631975442 is a wasteful number, since it uses less digits than its factorization.

9631975442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4815987723.

The product of its digits is 1632960, while the sum is 50.

The square root of 9631975442 is about 98142.6280573330. The cubic root of 9631975442 is about 2127.6741745911.

The spelling of 9631975442 in words is "nine billion, six hundred thirty-one million, nine hundred seventy-five thousand, four hundred forty-two".