1605211552 has 48 divisors (see below), whose sum is σ = 3709359360. Its totient is φ = 669351168.

The previous prime is 1605211549. The next prime is 1605211591. The reversal of 1605211552 is 2551125061.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 1605211552.

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 7 ways as a sum of consecutive naturals, for example, 88552 + ... + 105127.

It is an arithmetic number, because the mean of its divisors is an integer number (77278320).

Almost surely, 2^1605211552 is an apocalyptic number.

It is an amenable number.

1605211552 is an abundant number, since it is smaller than the sum of its proper divisors (2104147808).

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

1605211552 is a wasteful number, since it uses less digits than its factorization.

1605211552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193733 (or 193725 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 1605211552 is about 40065.0914388074. The cubic root of 1605211552 is about 1170.8756082128.

The spelling of 1605211552 in words is "one billion, six hundred five million, two hundred eleven thousand, five hundred fifty-two".