1820460080 has 20 divisors (see below), whose sum is σ = 4232569872. Its totient is φ = 728184000.

The previous prime is 1820460067. The next prime is 1820460101. The reversal of 1820460080 is 800640281.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11377796 + ... + 11377955.

Almost surely, 2^1820460080 is an apocalyptic number.

1820460080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1820460080 is an abundant number, since it is smaller than the sum of its proper divisors (2412109792).

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

1820460080 is a wasteful number, since it uses less digits than its factorization.

1820460080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22755764 (or 22755758 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1820460080 is about 42666.8498954399. The cubic root of 1820460080 is about 1221.0320211308.

The spelling of 1820460080 in words is "one billion, eight hundred twenty million, four hundred sixty thousand, eighty".