1053890565 has 32 divisors (see below), whose sum is σ = 2075356416. Its totient is φ = 444718080.

The previous prime is 1053890557. The next prime is 1053890581. The reversal of 1053890565 is 5650983501.

It is not a de Polignac number, because 1053890565 - 2³ = 1053890557 is a prime.

It is a super-2 number, since 2×1053890565² = 2221370645992038450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 384676 + ... + 387405.

It is an arithmetic number, because the mean of its divisors is an integer number (64854888).

Almost surely, 2^1053890565 is an apocalyptic number.

1053890565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1053890565 is a deficient number, since it is larger than the sum of its proper divisors (1021465851).

1053890565 is a wasteful number, since it uses less digits than its factorization.

1053890565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772109.

The product of its (nonzero) digits is 162000, while the sum is 42.

The square root of 1053890565 is about 32463.6807062908. The cubic root of 1053890565 is about 1017.6501606548.

The spelling of 1053890565 in words is "one billion, fifty-three million, eight hundred ninety thousand, five hundred sixty-five".