1616203616 has 48 divisors (see below), whose sum is σ = 3231301248. Its totient is φ = 795648000.

The previous prime is 1616203613. The next prime is 1616203637. The reversal of 1616203616 is 6163026161.

It is a super-2 number, since 2×1616203616² = 5224228256742950912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616203613) 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, 622481 + ... + 625071.

It is an arithmetic number, because the mean of its divisors is an integer number (67318776).

Almost surely, 2^1616203616 is an apocalyptic number.

1616203616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1616203616 is a deficient number, since it is larger than the sum of its proper divisors (1615097632).

1616203616 is a wasteful number, since it uses less digits than its factorization.

1616203616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2895 (or 2887 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1616203616 is about 40202.0349733692. The cubic root of 1616203616 is about 1173.5421463188.

Adding to 1616203616 its reverse (6163026161), we get a palindrome (7779229777).

The spelling of 1616203616 in words is "one billion, six hundred sixteen million, two hundred three thousand, six hundred sixteen".