1616149920 has 384 divisors, whose sum is σ = 6444748800. Its totient is φ = 330670080.

The previous prime is 1616149837. The next prime is 1616149987. The reversal of 1616149920 is 299416161.

It is a super-2 number, since 2×1616149920² = 5223881127832012800, 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 63 ways as a sum of consecutive naturals, for example, 2697781 + ... + 2698379.

It is an arithmetic number, because the mean of its divisors is an integer number (16783200).

Almost surely, 2^1616149920 is an apocalyptic number.

1616149920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1616149920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3222374400).

1616149920 is an abundant number, since it is smaller than the sum of its proper divisors (4828598880).

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

1616149920 is a wasteful number, since it uses less digits than its factorization.

1616149920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708 (or 700 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 1616149920 is about 40201.3671409319. The cubic root of 1616149920 is about 1173.5291497681.

The spelling of 1616149920 in words is "one billion, six hundred sixteen million, one hundred forty-nine thousand, nine hundred twenty".