1650560538 has 16 divisors (see below), whose sum is σ = 3601223136. Its totient is φ = 500169840.

The previous prime is 1650560531. The next prime is 1650560551. The reversal of 1650560538 is 8350650561.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1650560496 and 1650560505.

It is not an unprimeable number, because it can be changed into a prime (1650560531) 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 in 7 ways as a sum of consecutive naturals, for example, 12504181 + ... + 12504312.

It is an arithmetic number, because the mean of its divisors is an integer number (225076446).

Almost surely, 2^1650560538 is an apocalyptic number.

1650560538 is an abundant number, since it is smaller than the sum of its proper divisors (1950662598).

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

1650560538 is a wasteful number, since it uses less digits than its factorization.

1650560538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25008509.

The product of its (nonzero) digits is 108000, while the sum is 39.

The square root of 1650560538 is about 40627.0911831010. The cubic root of 1650560538 is about 1181.7995471471.

The spelling of 1650560538 in words is "one billion, six hundred fifty million, five hundred sixty thousand, five hundred thirty-eight".