1668502080 has 168 divisors, whose sum is σ = 6558881472. Its totient is φ = 381367296.

The previous prime is 1668502079. The next prime is 1668502097. The reversal of 1668502080 is 802058661.

It is a happy number.

1668502080 is a `hidden beast` number, since 16 + 68 + 502 + 0 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 21222 + ... + 61541.

Almost surely, 2^1668502080 is an apocalyptic number.

1668502080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1668502080 is an abundant number, since it is smaller than the sum of its proper divisors (4890379392).

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

1668502080 is a wasteful number, since it uses less digits than its factorization.

1668502080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82793 (or 82780 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 1668502080 is about 40847.3019916861. The cubic root of 1668502080 is about 1186.0661664574.

The spelling of 1668502080 in words is "one billion, six hundred sixty-eight million, five hundred two thousand, eighty".