1616404020 has 96 divisors (see below), whose sum is σ = 5642735616. Its totient is φ = 335875200.

The previous prime is 1616404003. The next prime is 1616404021. The reversal of 1616404020 is 204046161.

It is a super-2 number, since 2×1616404020² = 5225523911744320800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616404021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170316 + ... + 179555.

It is an arithmetic number, because the mean of its divisors is an integer number (58778496).

Almost surely, 2^1616404020 is an apocalyptic number.

1616404020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1616404020 is an abundant number, since it is smaller than the sum of its proper divisors (4026331596).

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

1616404020 is a wasteful number, since it uses less digits than its factorization.

1616404020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349901 (or 349899 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1616404020 is about 40204.5273570030. The cubic root of 1616404020 is about 1173.5906494525.

The spelling of 1616404020 in words is "one billion, six hundred sixteen million, four hundred four thousand, twenty".