1605634116 has 24 divisors (see below), whose sum is σ = 3826193280. Its totient is φ = 523823712.

The previous prime is 1605634103. The next prime is 1605634127. The reversal of 1605634116 is 6114365061.

It is an unprimeable number.

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, 1422871 + ... + 1423998.

It is an arithmetic number, because the mean of its divisors is an integer number (159424720).

Almost surely, 2^1605634116 is an apocalyptic number.

It is an amenable number.

1605634116 is an abundant number, since it is smaller than the sum of its proper divisors (2220559164).

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

1605634116 is a wasteful number, since it uses less digits than its factorization.

1605634116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2846923 (or 2846921 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 1605634116 is about 40070.3645603581. The cubic root of 1605634116 is about 1170.9783416025.

Adding to 1605634116 its reverse (6114365061), we get a palindrome (7719999177).

The spelling of 1605634116 in words is "one billion, six hundred five million, six hundred thirty-four thousand, one hundred sixteen".