1606904940 has 48 divisors (see below), whose sum is σ = 4764003552. Its totient is φ = 403301376.

The previous prime is 1606904911. The next prime is 1606904989. The reversal of 1606904940 is 494096061.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 786679 + ... + 788718.

It is an arithmetic number, because the mean of its divisors is an integer number (99250074).

Almost surely, 2^1606904940 is an apocalyptic number.

1606904940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1606904940 is an abundant number, since it is smaller than the sum of its proper divisors (3157098612).

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

1606904940 is a wasteful number, since it uses less digits than its factorization.

1606904940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575426 (or 1575424 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 1606904940 is about 40086.2188289192. The cubic root of 1606904940 is about 1171.2871946462.

The spelling of 1606904940 in words is "one billion, six hundred six million, nine hundred four thousand, nine hundred forty".