7875842274 has 128 divisors (see below), whose sum is σ = 18661708800. Its totient is φ = 2458460160.

The previous prime is 7875842267. The next prime is 7875842279. The reversal of 7875842274 is 4722485787.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7875842274.

It is not an unprimeable number, because it can be changed into a prime (7875842279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6470914 + ... + 6472130.

It is an arithmetic number, because the mean of its divisors is an integer number (145794600).

Almost surely, 2^7875842274 is an apocalyptic number.

7875842274 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7875842274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9330854400).

7875842274 is an abundant number, since it is smaller than the sum of its proper divisors (10785866526).

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

7875842274 is a wasteful number, since it uses less digits than its factorization.

7875842274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385 (or 1379 counting only the distinct ones).

The product of its digits is 7024640, while the sum is 54.

The square root of 7875842274 is about 88745.9422959720. The cubic root of 7875842274 is about 1989.5995317144.

The spelling of 7875842274 in words is "seven billion, eight hundred seventy-five million, eight hundred forty-two thousand, two hundred seventy-four".