1616611560 has 64 divisors (see below), whose sum is σ = 5006292480. Its totient is φ = 417189120.

The previous prime is 1616611547. The next prime is 1616611589. The reversal of 1616611560 is 651166161.

It is a super-2 number, since 2×1616611560² = 5226865871851267200, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 213567 + ... + 221006.

It is an arithmetic number, because the mean of its divisors is an integer number (78223320).

Almost surely, 2^1616611560 is an apocalyptic number.

1616611560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1616611560 is an abundant number, since it is smaller than the sum of its proper divisors (3389680920).

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

1616611560 is a wasteful number, since it uses less digits than its factorization.

1616611560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434618 (or 434614 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 1616611560 is about 40207.1083267623. The cubic root of 1616611560 is about 1173.6408754639.

The spelling of 1616611560 in words is "one billion, six hundred sixteen million, six hundred eleven thousand, five hundred sixty".