7581964242 has 16 divisors (see below), whose sum is σ = 15166025280. Its totient is φ = 2526971952.

The previous prime is 7581964241. The next prime is 7581964289. The reversal of 7581964242 is 2424691857.

It is a junction number, because it is equal to n+sod(n) for n = 7581964191 and 7581964200.

It is not an unprimeable number, because it can be changed into a prime (7581964241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38233 + ... + 128940.

It is an arithmetic number, because the mean of its divisors is an integer number (947876580).

Almost surely, 2^7581964242 is an apocalyptic number.

7581964242 is an abundant number, since it is smaller than the sum of its proper divisors (7584061038).

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

7581964242 is a wasteful number, since it uses less digits than its factorization.

7581964242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174737.

The product of its digits is 967680, while the sum is 48.

The square root of 7581964242 is about 87074.4752611235. The cubic root of 7581964242 is about 1964.5386492093.

The spelling of 7581964242 in words is "seven billion, five hundred eighty-one million, nine hundred sixty-four thousand, two hundred forty-two".