1620480832 has 14 divisors (see below), whose sum is σ = 3215641778. Its totient is φ = 810240384.

The previous prime is 1620480809. The next prime is 1620480833. The reversal of 1620480832 is 2380840261.

It can be written as a sum of positive squares in only one way, i.e., 1617326656 + 3154176 = 40216^2 + 1776^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620480833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12659943 + ... + 12660070.

Almost surely, 2^1620480832 is an apocalyptic number.

It is an amenable number.

1620480832 is a deficient number, since it is larger than the sum of its proper divisors (1595160946).

1620480832 is an equidigital number, since it uses as much as digits as its factorization.

1620480832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25320025 (or 25320015 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 1620480832 is about 40255.1963353801. The cubic root of 1620480832 is about 1174.5764779945.

The spelling of 1620480832 in words is "one billion, six hundred twenty million, four hundred eighty thousand, eight hundred thirty-two".