7931578948 has 12 divisors (see below), whose sum is σ = 13886385660. Its totient is φ = 3964040192.

The previous prime is 7931578931. The next prime is 7931578951. The reversal of 7931578948 is 8498751397.

It can be written as a sum of positive squares in 2 ways, for example, as 6039154944 + 1892424004 = 77712^2 + 43502^2 .

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 in 3 ways as a sum of consecutive naturals, for example, 427093 + ... + 445276.

It is an arithmetic number, because the mean of its divisors is an integer number (1157198805).

Almost surely, 2^7931578948 is an apocalyptic number.

It is an amenable number.

7931578948 is a deficient number, since it is larger than the sum of its proper divisors (5954806712).

7931578948 is a wasteful number, since it uses less digits than its factorization.

7931578948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874646 (or 874644 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 61.

The square root of 7931578948 is about 89059.4124615697. The cubic root of 7931578948 is about 1994.2819129873.

The spelling of 7931578948 in words is "seven billion, nine hundred thirty-one million, five hundred seventy-eight thousand, nine hundred forty-eight".