1565230969 has 3 divisors (see below), whose sum is σ = 1565270533. Its totient is φ = 1565191406.

The previous prime is 1565230939. The next prime is 1565230973. The reversal of 1565230969 is 9690325651.

The square root of 1565230969 is 39563.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9690325651 = 73 ⋅132744187.

It is not a de Polignac number, because 1565230969 - 2⁷ = 1565230841 is a prime.

It is a super-2 number, since 2×1565230969² = 4899895972633357922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1565230939) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 19782 + ... + 59344.

Almost surely, 2^1565230969 is an apocalyptic number.

1565230969 is the 39563-rd square number.

1565230969 is the 19782-nd centered octagonal number.

It is an amenable number.

1565230969 is a deficient number, since it is larger than the sum of its proper divisors (39564).

1565230969 is an frugal number, since it uses more digits than its factorization.

1565230969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79126 (or 39563 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 46.

The cubic root of 1565230969 is about 1161.0728701224.

The spelling of 1565230969 in words is "one billion, five hundred sixty-five million, two hundred thirty thousand, nine hundred sixty-nine".