1605162516 has 24 divisors (see below), whose sum is σ = 3866198784. Its totient is φ = 517794240.

The previous prime is 1605162509. The next prime is 1605162563. The reversal of 1605162516 is 6152615061.

It is a congruent number.

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, 2157105 + ... + 2157848.

It is an arithmetic number, because the mean of its divisors is an integer number (161091616).

Almost surely, 2^1605162516 is an apocalyptic number.

It is an amenable number.

1605162516 is an abundant number, since it is smaller than the sum of its proper divisors (2261036268).

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

1605162516 is a wasteful number, since it uses less digits than its factorization.

1605162516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4314991 (or 4314989 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 1605162516 is about 40064.4794799583. The cubic root of 1605162516 is about 1170.8636854560.

Adding to 1605162516 its reverse (6152615061), we get a palindrome (7757777577).

The spelling of 1605162516 in words is "one billion, six hundred five million, one hundred sixty-two thousand, five hundred sixteen".