1800480780 has 72 divisors (see below), whose sum is σ = 6241671072. Its totient is φ = 411538176.

The previous prime is 1800480767. The next prime is 1800480827. The reversal of 1800480780 is 870840081.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 713217 + ... + 715736.

It is an arithmetic number, because the mean of its divisors is an integer number (86689876).

Almost surely, 2^1800480780 is an apocalyptic number.

1800480780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1800480780 is an abundant number, since it is smaller than the sum of its proper divisors (4441190292).

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

1800480780 is a wasteful number, since it uses less digits than its factorization.

1800480780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428975 (or 1428970 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 1800480780 is about 42432.0725395308. The cubic root of 1800480780 is about 1216.5486932170.

The spelling of 1800480780 in words is "one billion, eight hundred million, four hundred eighty thousand, seven hundred eighty".