1566241165 has 8 divisors (see below), whose sum is σ = 1896733080. Its totient is φ = 1241497152.

The previous prime is 1566241151. The next prime is 1566241177. The reversal of 1566241165 is 5611426651.

It can be written as a sum of positive squares in 4 ways, for example, as 58782889 + 1507458276 = 7667^2 + 38826^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1566241165 - 2¹¹ = 1566239117 is a prime.

It is a super-2 number, since 2×1566241165² = 4906222773881114450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1436374 + ... + 1437463.

It is an arithmetic number, because the mean of its divisors is an integer number (237091635).

Almost surely, 2^1566241165 is an apocalyptic number.

It is an amenable number.

1566241165 is a deficient number, since it is larger than the sum of its proper divisors (330491915).

1566241165 is a wasteful number, since it uses less digits than its factorization.

1566241165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873951.

The product of its digits is 43200, while the sum is 37.

The square root of 1566241165 is about 39575.7648694248. The cubic root of 1566241165 is about 1161.3226008760.

The spelling of 1566241165 in words is "one billion, five hundred sixty-six million, two hundred forty-one thousand, one hundred sixty-five".