1616181992 has 16 divisors (see below), whose sum is σ = 3050412000. Its totient is φ = 802738800.

The previous prime is 1616181989. The next prime is 1616182033. The reversal of 1616181992 is 2991816161.

It is a super-2 number, since 2×1616181992² = 5224088462530176128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 667742 + ... + 670157.

It is an arithmetic number, because the mean of its divisors is an integer number (190650750).

Almost surely, 2^1616181992 is an apocalyptic number.

It is an amenable number.

1616181992 is a deficient number, since it is larger than the sum of its proper divisors (1434230008).

1616181992 is a wasteful number, since it uses less digits than its factorization.

1616181992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338056 (or 1338052 counting only the distinct ones).

The product of its digits is 46656, while the sum is 44.

The square root of 1616181992 is about 40201.7660308599. The cubic root of 1616181992 is about 1173.5369124922.

The spelling of 1616181992 in words is "one billion, six hundred sixteen million, one hundred eighty-one thousand, nine hundred ninety-two".