1565042652 has 72 divisors (see below), whose sum is σ = 4192428240. Its totient is φ = 491393280.

The previous prime is 1565042639. The next prime is 1565042723. The reversal of 1565042652 is 2562405651.

1565042652 is a `hidden beast` number, since 1 + 565 + 0 + 42 + 6 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24523 + ... + 61085.

It is an arithmetic number, because the mean of its divisors is an integer number (58228170).

Almost surely, 2^1565042652 is an apocalyptic number.

1565042652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1565042652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2096214120).

1565042652 is an abundant number, since it is smaller than the sum of its proper divisors (2627385588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1565042652 is a wasteful number, since it uses less digits than its factorization.

1565042652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36643 (or 36638 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 1565042652 is about 39560.6199648084. The cubic root of 1565042652 is about 1161.0263043581.

The spelling of 1565042652 in words is "one billion, five hundred sixty-five million, forty-two thousand, six hundred fifty-two".