7919788834 has 32 divisors (see below), whose sum is σ = 12367779840. Its totient is φ = 3801313152.

The previous prime is 7919788777. The next prime is 7919788847. The reversal of 7919788834 is 4388879197.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 978697 + ... + 986755.

It is an arithmetic number, because the mean of its divisors is an integer number (386493120).

Almost surely, 2^7919788834 is an apocalyptic number.

7919788834 is a deficient number, since it is larger than the sum of its proper divisors (4447991006).

7919788834 is a wasteful number, since it uses less digits than its factorization.

7919788834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8314.

The product of its digits is 24385536, while the sum is 64.

The square root of 7919788834 is about 88993.1954365051. The cubic root of 7919788834 is about 1993.2932712002.

The spelling of 7919788834 in words is "seven billion, nine hundred nineteen million, seven hundred eighty-eight thousand, eight hundred thirty-four".