9964195642 has 8 divisors (see below), whose sum is σ = 15310837332. Its totient is φ = 4860583200.

The previous prime is 9964195639. The next prime is 9964195643. The reversal of 9964195642 is 2465914699.

It can be written as a sum of positive squares in 2 ways, for example, as 8376093441 + 1588102201 = 91521^2 + 39851^2 .

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

It is not an unprimeable number, because it can be changed into a prime (9964195643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60757209 + ... + 60757372.

Almost surely, 2^9964195642 is an apocalyptic number.

9964195642 is a deficient number, since it is larger than the sum of its proper divisors (5346641690).

9964195642 is a wasteful number, since it uses less digits than its factorization.

9964195642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121514624.

The product of its digits is 4199040, while the sum is 55.

The square root of 9964195642 is about 99820.8176784783. The cubic root of 9964195642 is about 2151.8603434577.

The spelling of 9964195642 in words is "nine billion, nine hundred sixty-four million, one hundred ninety-five thousand, six hundred forty-two".