1565043145 has 32 divisors (see below), whose sum is σ = 2008800000. Its totient is φ = 1168500480.

The previous prime is 1565043133. The next prime is 1565043149. The reversal of 1565043145 is 5413405651.

It is a de Polignac number, because none of the positive numbers 2^k-1565043145 is a prime.

It is a super-2 number, since 2×1565043145² = 4898720091422982050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1565043145.

It is not an unprimeable number, because it can be changed into a prime (1565043149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 520356 + ... + 523354.

It is an arithmetic number, because the mean of its divisors is an integer number (62775000).

Almost surely, 2^1565043145 is an apocalyptic number.

It is an amenable number.

1565043145 is a deficient number, since it is larger than the sum of its proper divisors (443756855).

1565043145 is a wasteful number, since it uses less digits than its factorization.

1565043145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3153.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 1565043145 is about 39560.6261957518. The cubic root of 1565043145 is about 1161.0264262687.

Adding to 1565043145 its reverse (5413405651), we get a palindrome (6978448796).

The spelling of 1565043145 in words is "one billion, five hundred sixty-five million, forty-three thousand, one hundred forty-five".