1803012980 has 48 divisors (see below), whose sum is σ = 4003668480. Its totient is φ = 680151168.

The previous prime is 1803012973. The next prime is 1803012983. The reversal of 1803012980 is 892103081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1803012983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74102 + ... + 95378.

It is an arithmetic number, because the mean of its divisors is an integer number (83409760).

Almost surely, 2^1803012980 is an apocalyptic number.

1803012980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1803012980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2001834240).

1803012980 is an abundant number, since it is smaller than the sum of its proper divisors (2200655500).

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

1803012980 is a wasteful number, since it uses less digits than its factorization.

1803012980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21528 (or 21526 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 1803012980 is about 42461.9003342997. The cubic root of 1803012980 is about 1217.1187449500.

The spelling of 1803012980 in words is "one billion, eight hundred three million, twelve thousand, nine hundred eighty".