1620048556 has 12 divisors (see below), whose sum is σ = 3240097168. Its totient is φ = 694306512.

The previous prime is 1620048523. The next prime is 1620048557. The reversal of 1620048556 is 6558400261.

1620048556 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1620048557) 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, 28929411 + ... + 28929466.

Almost surely, 2^1620048556 is an apocalyptic number.

It is an amenable number.

1620048556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1620048556 is a wasteful number, since it uses less digits than its factorization.

1620048556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57858888 (or 57858886 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 1620048556 is about 40249.8267822360. The cubic root of 1620048556 is about 1174.4720262034.

The spelling of 1620048556 in words is "one billion, six hundred twenty million, forty-eight thousand, five hundred fifty-six".