1620016504 has 16 divisors (see below), whose sum is σ = 3051155520. Its totient is φ = 806375040.

The previous prime is 1620016501. The next prime is 1620016549. The reversal of 1620016504 is 4056100261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620016501) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 452257 + ... + 455824.

It is an arithmetic number, because the mean of its divisors is an integer number (190697220).

Almost surely, 2^1620016504 is an apocalyptic number.

It is an amenable number.

1620016504 is a deficient number, since it is larger than the sum of its proper divisors (1431139016).

1620016504 is a wasteful number, since it uses less digits than its factorization.

1620016504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908310 (or 908306 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1620016504 is about 40249.4286170624. The cubic root of 1620016504 is about 1174.4642806689.

Adding to 1620016504 its reverse (4056100261), we get a palindrome (5676116765).

The spelling of 1620016504 in words is "one billion, six hundred twenty million, sixteen thousand, five hundred four".