1670520840 has 32 divisors (see below), whose sum is σ = 5011562880. Its totient is φ = 445472192.

The previous prime is 1670520809. The next prime is 1670520883. The reversal of 1670520840 is 480250761.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6960384 + ... + 6960623.

It is an arithmetic number, because the mean of its divisors is an integer number (156611340).

Almost surely, 2^1670520840 is an apocalyptic number.

1670520840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1670520840 is an abundant number, since it is smaller than the sum of its proper divisors (3341042040).

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

1670520840 is a wasteful number, since it uses less digits than its factorization.

1670520840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13921021 (or 13921017 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 1670520840 is about 40872.0055783907. The cubic root of 1670520840 is about 1186.5443234698.

The spelling of 1670520840 in words is "one billion, six hundred seventy million, five hundred twenty thousand, eight hundred forty".