1606852881 has 12 divisors (see below), whose sum is σ = 2341551108. Its totient is φ = 1061754624.

The previous prime is 1606852843. The next prime is 1606852889. The reversal of 1606852881 is 1882586061.

1606852881 is a `hidden beast` number, since 1 + 60 + 68 + 528 + 8 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 43441281 + 1563411600 = 6591^2 + 39540^2 .

It is not a de Polignac number, because 1606852881 - 2⁶ = 1606852817 is a prime.

It is a super-2 number, since 2×1606852881² = 5163952362356000322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1606852889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 788980 + ... + 791013.

It is an arithmetic number, because the mean of its divisors is an integer number (195129259).

Almost surely, 2^1606852881 is an apocalyptic number.

It is an amenable number.

1606852881 is a deficient number, since it is larger than the sum of its proper divisors (734698227).

1606852881 is a wasteful number, since it uses less digits than its factorization.

1606852881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580112 (or 1580109 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The square root of 1606852881 is about 40085.5694857888. The cubic root of 1606852881 is about 1171.2745457547.

The spelling of 1606852881 in words is "one billion, six hundred six million, eight hundred fifty-two thousand, eight hundred eighty-one".