1616266668 has 12 divisors (see below), whose sum is σ = 3771288920. Its totient is φ = 538755552.

The previous prime is 1616266667. The next prime is 1616266693. The reversal of 1616266668 is 8666626161.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1616266668² = 5224635884175644448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1616266667) 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 3 ways as a sum of consecutive naturals, for example, 67344433 + ... + 67344456.

Almost surely, 2^1616266668 is an apocalyptic number.

It is an amenable number.

1616266668 is an abundant number, since it is smaller than the sum of its proper divisors (2155022252).

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

1616266668 is a wasteful number, since it uses less digits than its factorization.

1616266668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134688896 (or 134688894 counting only the distinct ones).

The product of its digits is 746496, while the sum is 48.

The square root of 1616266668 is about 40202.8191548802. The cubic root of 1616266668 is about 1173.5574070233.

The spelling of 1616266668 in words is "one billion, six hundred sixteen million, two hundred sixty-six thousand, six hundred sixty-eight".