1565088080 has 80 divisors (see below), whose sum is σ = 3740385600. Its totient is φ = 608670720.

The previous prime is 1565088079. The next prime is 1565088097. The reversal of 1565088080 is 808805651.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1242491 + ... + 1243749.

It is an arithmetic number, because the mean of its divisors is an integer number (46754820).

Almost surely, 2^1565088080 is an apocalyptic number.

1565088080 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 1565088080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1870192800).

1565088080 is an abundant number, since it is smaller than the sum of its proper divisors (2175297520).

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

1565088080 is a wasteful number, since it uses less digits than its factorization.

1565088080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692 (or 1686 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 41.

The square root of 1565088080 is about 39561.1941174682. The cubic root of 1565088080 is about 1161.0375378310.

The spelling of 1565088080 in words is "one billion, five hundred sixty-five million, eighty-eight thousand, eighty".