1565242845 has 8 divisors (see below), whose sum is σ = 2504388576. Its totient is φ = 834796176.

The previous prime is 1565242843. The next prime is 1565242867. The reversal of 1565242845 is 5482425651.

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

It is not a de Polignac number, because 1565242845 - 2¹ = 1565242843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1565242797 and 1565242806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1565242843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52174747 + ... + 52174776.

It is an arithmetic number, because the mean of its divisors is an integer number (313048572).

Almost surely, 2^1565242845 is an apocalyptic number.

1565242845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1565242845 is a deficient number, since it is larger than the sum of its proper divisors (939145731).

1565242845 is a wasteful number, since it uses less digits than its factorization.

1565242845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104349531.

The product of its digits is 384000, while the sum is 42.

The square root of 1565242845 is about 39563.1500894456. The cubic root of 1565242845 is about 1161.0758066148.

The spelling of 1565242845 in words is "one billion, five hundred sixty-five million, two hundred forty-two thousand, eight hundred forty-five".