1616697152 has 56 divisors (see below), whose sum is σ = 3726606720. Its totient is φ = 681500160.

The previous prime is 1616697139. The next prime is 1616697169. The reversal of 1616697152 is 2517966161.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×1616697152² = 5227419362569822208, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2252 + ... + 56907.

Almost surely, 2^1616697152 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 1616697152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1863303360).

1616697152 is an abundant number, since it is smaller than the sum of its proper divisors (2109909568).

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

1616697152 is an equidigital number, since it uses as much as digits as its factorization.

1616697152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59239 (or 59229 counting only the distinct ones).

The product of its digits is 136080, while the sum is 44.

The square root of 1616697152 is about 40208.1727015790. The cubic root of 1616697152 is about 1173.6615880249.

The spelling of 1616697152 in words is "one billion, six hundred sixteen million, six hundred ninety-seven thousand, one hundred fifty-two".