1560000000 has 320 divisors, whose sum is σ = 5594516928. Its totient is φ = 384000000.

The previous prime is 1559999977. The next prime is 1560000037. The reversal of 1560000000 is 651.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 119999994 + ... + 120000006.

Almost surely, 2^1560000000 is an apocalyptic number.

1560000000 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 1560000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2797258464).

1560000000 is an abundant number, since it is smaller than the sum of its proper divisors (4034516928).

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

1560000000 is an frugal number, since it uses more digits than its factorization.

1560000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69 (or 23 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 1560000000 is about 39496.8353162630. The cubic root of 1560000000 is about 1159.7779995298. Note that the first 3 decimals are identical.

Adding to 1560000000 its reverse (651), we get a palindrome (1560000651).

It can be divided in two parts, 15 and 60000000, that multiplied together give a square (900000000 = 30000²).

The spelling of 1560000000 in words is "one billion, five hundred sixty million", and thus it is an aban number.