1652537569 has 4 divisors (see below), whose sum is σ = 1663063444. Its totient is φ = 1642011696.

The previous prime is 1652537543. The next prime is 1652537599. The reversal of 1652537569 is 9657352561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9657352561 = 113 ⋅85463297.

It can be written as a sum of positive squares in 2 ways, for example, as 1191147169 + 461390400 = 34513^2 + 21480^2 .

It is a cyclic number.

It is not a de Polignac number, because 1652537569 - 2¹⁵ = 1652504801 is a prime.

It is a super-2 number, since 2×1652537569² = 5461760833912859522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1652537599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5262702 + ... + 5263015.

It is an arithmetic number, because the mean of its divisors is an integer number (415765861).

Almost surely, 2^1652537569 is an apocalyptic number.

It is an amenable number.

1652537569 is a deficient number, since it is larger than the sum of its proper divisors (10525875).

1652537569 is a wasteful number, since it uses less digits than its factorization.

1652537569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10525874.

The product of its digits is 1701000, while the sum is 49.

The square root of 1652537569 is about 40651.4153382142. The cubic root of 1652537569 is about 1182.2712095599.

The spelling of 1652537569 in words is "one billion, six hundred fifty-two million, five hundred thirty-seven thousand, five hundred sixty-nine".