1980425460 has 96 divisors (see below), whose sum is σ = 6117495552. Its totient is φ = 475591680.

The previous prime is 1980425459. The next prime is 1980425471. The reversal of 1980425460 is 645240891.

1980425460 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1017 + ... + 62943.

It is an arithmetic number, because the mean of its divisors is an integer number (63723912).

Almost surely, 2^1980425460 is an apocalyptic number.

1980425460 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 1980425460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3058747776).

1980425460 is an abundant number, since it is smaller than the sum of its proper divisors (4137070092).

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

1980425460 is a wasteful number, since it uses less digits than its factorization.

1980425460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61993 (or 61991 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 1980425460 is about 44501.9714170058. The cubic root of 1980425460 is about 1255.7971708187.

The spelling of 1980425460 in words is "one billion, nine hundred eighty million, four hundred twenty-five thousand, four hundred sixty".