7774894536 has 64 divisors (see below), whose sum is σ = 19896883200. Its totient is φ = 2530602048.

The previous prime is 7774894531. The next prime is 7774894537. The reversal of 7774894536 is 6354984777.

It is a self number, because there is not a number n which added to its sum of digits gives 7774894536.

It is not an unprimeable number, because it can be changed into a prime (7774894531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 491925 + ... + 507483.

It is an arithmetic number, because the mean of its divisors is an integer number (310888800).

Almost surely, 2^7774894536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7774894536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9948441600).

7774894536 is an abundant number, since it is smaller than the sum of its proper divisors (12121988664).

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

7774894536 is a wasteful number, since it uses less digits than its factorization.

7774894536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16058 (or 16054 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 60.

The square root of 7774894536 is about 88175.3624092354. The cubic root of 7774894536 is about 1981.0624621276.

The spelling of 7774894536 in words is "seven billion, seven hundred seventy-four million, eight hundred ninety-four thousand, five hundred thirty-six".