1485779520 has 112 divisors (see below), whose sum is σ = 4727448000. Its totient is φ = 395360256.

The previous prime is 1485779509. The next prime is 1485779521. The reversal of 1485779520 is 259775841.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1485779520.

It is not an unprimeable number, because it can be changed into a prime (1485779521) 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, 539106 + ... + 541854.

Almost surely, 2^1485779520 is an apocalyptic number.

1485779520 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 1485779520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2363724000).

1485779520 is an abundant number, since it is smaller than the sum of its proper divisors (3241668480).

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

1485779520 is a wasteful number, since it uses less digits than its factorization.

1485779520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3332 (or 3322 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 48.

The square root of 1485779520 is about 38545.8106673086. The cubic root of 1485779520 is about 1141.0853314230.

The spelling of 1485779520 in words is "one billion, four hundred eighty-five million, seven hundred seventy-nine thousand, five hundred twenty".