1616502144 has 64 divisors (see below), whose sum is σ = 4321344240. Its totient is φ = 535382016.

The previous prime is 1616502109. The next prime is 1616502149. The reversal of 1616502144 is 4412056161.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×1616502144² = 5226158363113193472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616502149) 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 7 ways as a sum of consecutive naturals, for example, 46882 + ... + 73694.

Almost surely, 2^1616502144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1616502144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2160672120).

1616502144 is an abundant number, since it is smaller than the sum of its proper divisors (2704842096).

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

1616502144 is a wasteful number, since it uses less digits than its factorization.

1616502144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26987 (or 26975 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1616502144 is about 40205.7476488126. The cubic root of 1616502144 is about 1173.6143966258.

The spelling of 1616502144 in words is "one billion, six hundred sixteen million, five hundred two thousand, one hundred forty-four".