7845978274 has 4 divisors (see below), whose sum is σ = 11768967414. Its totient is φ = 3922989136.

The previous prime is 7845978233. The next prime is 7845978277. The reversal of 7845978274 is 4728795487.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7797773025 + 48205249 = 88305^2 + 6943^2 .

It is not an unprimeable number, because it can be changed into a prime (7845978277) by changing a digit.

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 as a sum of consecutive naturals, namely, 1961494567 + ... + 1961494570.

Almost surely, 2^7845978274 is an apocalyptic number.

7845978274 is a deficient number, since it is larger than the sum of its proper divisors (3922989140).

7845978274 is a wasteful number, since it uses less digits than its factorization.

7845978274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3922989139.

The product of its digits is 31610880, while the sum is 61.

The square root of 7845978274 is about 88577.5269128688. The cubic root of 7845978274 is about 1987.0815932072.

The spelling of 7845978274 in words is "seven billion, eight hundred forty-five million, nine hundred seventy-eight thousand, two hundred seventy-four".