1600666040 has 16 divisors (see below), whose sum is σ = 3601498680. Its totient is φ = 640266400.

The previous prime is 1600666033. The next prime is 1600666057. The reversal of 1600666040 is 406660061.

It is a junction number, because it is equal to n+sod(n) for n = 1600665994 and 1600666012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20008286 + ... + 20008365.

Almost surely, 2^1600666040 is an apocalyptic number.

1600666040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1600666040 is an abundant number, since it is smaller than the sum of its proper divisors (2000832640).

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

1600666040 is a wasteful number, since it uses less digits than its factorization.

1600666040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40016662 (or 40016658 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1600666040 is about 40008.3246337559. The cubic root of 1600666040 is about 1169.7693655021.

The spelling of 1600666040 in words is "one billion, six hundred million, six hundred sixty-six thousand, forty".