7917794782 has 8 divisors (see below), whose sum is σ = 11992000176. Its totient is φ = 3920461392.

The previous prime is 7917794737. The next prime is 7917794783. The reversal of 7917794782 is 2874977197.

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

It is a self number, because there is not a number n which added to its sum of digits gives 7917794782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7917794783) 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, 19217743 + ... + 19218154.

It is an arithmetic number, because the mean of its divisors is an integer number (1499000022).

Almost surely, 2^7917794782 is an apocalyptic number.

7917794782 is a deficient number, since it is larger than the sum of its proper divisors (4074205394).

7917794782 is a wasteful number, since it uses less digits than its factorization.

7917794782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38436002.

The product of its digits is 12446784, while the sum is 61.

The square root of 7917794782 is about 88981.9913353258. The cubic root of 7917794782 is about 1993.1259660632.

The spelling of 7917794782 in words is "seven billion, nine hundred seventeen million, seven hundred ninety-four thousand, seven hundred eighty-two".