1057943565 has 48 divisors (see below), whose sum is σ = 2187869760. Its totient is φ = 483628320.

The previous prime is 1057943543. The next prime is 1057943587. The reversal of 1057943565 is 5653497501.

1057943565 is a `hidden beast` number, since 10 + 5 + 79 + 4 + 3 + 565 = 666.

It is an interprime number because it is at equal distance from previous prime (1057943543) and next prime (1057943587).

It is not a de Polignac number, because 1057943565 - 2¹⁰ = 1057942541 is a prime.

It is a super-2 number, since 2×1057943565² = 2238489173449818450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1057943565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73351 + ... + 86580.

It is an arithmetic number, because the mean of its divisors is an integer number (45580620).

Almost surely, 2^1057943565 is an apocalyptic number.

1057943565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1057943565 is an abundant number, since it is smaller than the sum of its proper divisors (1129926195).

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

1057943565 is a wasteful number, since it uses less digits than its factorization.

1057943565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159959 (or 159946 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 45.

The square root of 1057943565 is about 32526.0444105950. The cubic root of 1057943565 is about 1018.9530347208.

It can be divided in two parts, 1057943 and 565, that multiplied together give a palindrome (597737795).

The spelling of 1057943565 in words is "one billion, fifty-seven million, nine hundred forty-three thousand, five hundred sixty-five".