7964689938 has 32 divisors (see below), whose sum is σ = 16067690496. Its totient is φ = 2631878928.

The previous prime is 7964689937. The next prime is 7964689963. The reversal of 7964689938 is 8399864697.

It is not an unprimeable number, because it can be changed into a prime (7964689937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1157095 + ... + 1163957.

It is an arithmetic number, because the mean of its divisors is an integer number (502115328).

Almost surely, 2^7964689938 is an apocalyptic number.

7964689938 is an abundant number, since it is smaller than the sum of its proper divisors (8103000558).

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

7964689938 is a wasteful number, since it uses less digits than its factorization.

7964689938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8518.

The product of its digits is 141087744, while the sum is 69.

The square root of 7964689938 is about 89245.1115636033. Note that the first 3 decimals coincide. The cubic root of 7964689938 is about 1997.0531550182.

The spelling of 7964689938 in words is "seven billion, nine hundred sixty-four million, six hundred eighty-nine thousand, nine hundred thirty-eight".