9639148742 has 16 divisors (see below), whose sum is σ = 15710668800. Its totient is φ = 4418624520.

The previous prime is 9639148703. The next prime is 9639148751. The reversal of 9639148742 is 2478419369.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4090142 + ... + 4092497.

It is an arithmetic number, because the mean of its divisors is an integer number (981916800).

Almost surely, 2^9639148742 is an apocalyptic number.

9639148742 is a deficient number, since it is larger than the sum of its proper divisors (6071520058).

9639148742 is a wasteful number, since it uses less digits than its factorization.

9639148742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8182691.

The product of its digits is 2612736, while the sum is 53.

The square root of 9639148742 is about 98179.1665375094. The cubic root of 9639148742 is about 2128.2022302662.

The spelling of 9639148742 in words is "nine billion, six hundred thirty-nine million, one hundred forty-eight thousand, seven hundred forty-two".