1605223050 has 48 divisors (see below), whose sum is σ = 3991030272. Its totient is φ = 426976000.

The previous prime is 1605223049. The next prime is 1605223063. The reversal of 1605223050 is 503225061.

It is a self number, because there is not a number n which added to its sum of digits gives 1605223050.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46807 + ... + 73493.

It is an arithmetic number, because the mean of its divisors is an integer number (83146464).

Almost surely, 2^1605223050 is an apocalyptic number.

1605223050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1605223050 is an abundant number, since it is smaller than the sum of its proper divisors (2385807222).

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

1605223050 is a wasteful number, since it uses less digits than its factorization.

1605223050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27103 (or 27098 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1605223050 is about 40065.2349300488. The cubic root of 1605223050 is about 1170.8784038351.

The spelling of 1605223050 in words is "one billion, six hundred five million, two hundred twenty-three thousand, fifty".