1578380560 has 20 divisors (see below), whose sum is σ = 3669734988. Its totient is φ = 631352192.

The previous prime is 1578380537. The next prime is 1578380581. The reversal of 1578380560 is 650838751.

It can be written as a sum of positive squares in 2 ways, for example, as 942735616 + 635644944 = 30704^2 + 25212^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9864799 + ... + 9864958.

Almost surely, 2^1578380560 is an apocalyptic number.

1578380560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1578380560 is an abundant number, since it is smaller than the sum of its proper divisors (2091354428).

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

1578380560 is a wasteful number, since it uses less digits than its factorization.

1578380560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19729770 (or 19729764 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 1578380560 is about 39728.8378888686. The cubic root of 1578380560 is about 1164.3152195179.

The spelling of 1578380560 in words is "one billion, five hundred seventy-eight million, three hundred eighty thousand, five hundred sixty".