1566795460 has 12 divisors (see below), whose sum is σ = 3290270508. Its totient is φ = 626718176.

The previous prime is 1566795457. The next prime is 1566795491. The reversal of 1566795460 is 645976651.

It can be written as a sum of positive squares in 2 ways, for example, as 520661124 + 1046134336 = 22818^2 + 32344^2 .

It is a super-2 number, since 2×1566795460² = 4909696026953223200, which contains 22 as substring.

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, 39169867 + ... + 39169906.

It is an arithmetic number, because the mean of its divisors is an integer number (274189209).

Almost surely, 2^1566795460 is an apocalyptic number.

1566795460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1566795460 is an abundant number, since it is smaller than the sum of its proper divisors (1723475048).

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

1566795460 is a wasteful number, since it uses less digits than its factorization.

1566795460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78339782 (or 78339780 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 49.

The square root of 1566795460 is about 39582.7672099867. The cubic root of 1566795460 is about 1161.4595826306.

The spelling of 1566795460 in words is "one billion, five hundred sixty-six million, seven hundred ninety-five thousand, four hundred sixty".