1611616016 has 20 divisors (see below), whose sum is σ = 3123436992. Its totient is φ = 805567776.

The previous prime is 1611616001. The next prime is 1611616079. The reversal of 1611616016 is 6106161161.

It is a self number, because there is not a number n which added to its sum of digits gives 1611616016.

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, 48461 + ... + 74643.

Almost surely, 2^1611616016 is an apocalyptic number.

1611616016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1611616016 is a deficient number, since it is larger than the sum of its proper divisors (1511820976).

1611616016 is a wasteful number, since it uses less digits than its factorization.

1611616016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30038 (or 30032 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 1611616016 is about 40144.9376136020. The cubic root of 1611616016 is about 1172.4307261427.

Adding to 1611616016 its reverse (6106161161), we get a palindrome (7717777177).

The spelling of 1611616016 in words is "one billion, six hundred eleven million, six hundred sixteen thousand, sixteen".