1580428980 has 144 divisors (see below), whose sum is σ = 5329519104. Its totient is φ = 376462080.

The previous prime is 1580428963. The next prime is 1580428991. The reversal of 1580428980 is 898240851.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61647 + ... + 83433.

Almost surely, 2^1580428980 is an apocalyptic number.

1580428980 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 1580428980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2664759552).

1580428980 is an abundant number, since it is smaller than the sum of its proper divisors (3749090124).

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

1580428980 is a wasteful number, since it uses less digits than its factorization.

1580428980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21846 (or 21841 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The square root of 1580428980 is about 39754.6095440516. The cubic root of 1580428980 is about 1164.8186839829.

The spelling of 1580428980 in words is "one billion, five hundred eighty million, four hundred twenty-eight thousand, nine hundred eighty".