8961947642 has 8 divisors (see below), whose sum is σ = 13474112832. Its totient is φ = 4470576700.

The previous prime is 8961947629. The next prime is 8961947689. The reversal of 8961947642 is 2467491698.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 5197484 + ... + 5199207.

It is an arithmetic number, because the mean of its divisors is an integer number (1684264104).

Almost surely, 2^8961947642 is an apocalyptic number.

8961947642 is a deficient number, since it is larger than the sum of its proper divisors (4512165190).

8961947642 is a wasteful number, since it uses less digits than its factorization.

8961947642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10397124.

The product of its digits is 5225472, while the sum is 56.

The square root of 8961947642 is about 94667.5638326032. The cubic root of 8961947642 is about 2077.1481226887.

The spelling of 8961947642 in words is "eight billion, nine hundred sixty-one million, nine hundred forty-seven thousand, six hundred forty-two".