1620048789 has 16 divisors (see below), whose sum is σ = 2401983040. Its totient is φ = 1079172720.

The previous prime is 1620048761. The next prime is 1620048791. The reversal of 1620048789 is 9878400261.

1620048789 is a `hidden beast` number, since 162 + 0 + 0 + 487 + 8 + 9 = 666.

It is not a de Polignac number, because 1620048789 - 2⁵ = 1620048757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620048799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11619 + ... + 58095.

It is an arithmetic number, because the mean of its divisors is an integer number (150123940).

Almost surely, 2^1620048789 is an apocalyptic number.

It is an amenable number.

1620048789 is a deficient number, since it is larger than the sum of its proper divisors (781934251).

1620048789 is a wasteful number, since it uses less digits than its factorization.

1620048789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47777 (or 47771 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 1620048789 is about 40249.8296766583. The cubic root of 1620048789 is about 1174.4720825087.

The spelling of 1620048789 in words is "one billion, six hundred twenty million, forty-eight thousand, seven hundred eighty-nine".