2192539940 has 12 divisors (see below), whose sum is σ = 4604333916. Its totient is φ = 877015968.

The previous prime is 2192539939. The next prime is 2192539957. The reversal of 2192539940 is 499352912.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1599520036 + 593019904 = 39994^2 + 24352^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2192539891 and 2192539900.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54813479 + ... + 54813518.

It is an arithmetic number, because the mean of its divisors is an integer number (383694493).

Almost surely, 2^2192539940 is an apocalyptic number.

2192539940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2192539940 is an abundant number, since it is smaller than the sum of its proper divisors (2411793976).

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

2192539940 is a wasteful number, since it uses less digits than its factorization.

2192539940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109627006 (or 109627004 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 2192539940 is about 46824.5655612521. The cubic root of 2192539940 is about 1299.1197077941.

The spelling of 2192539940 in words is "two billion, one hundred ninety-two million, five hundred thirty-nine thousand, nine hundred forty".