1028545065 has 36 divisors (see below), whose sum is σ = 1827489612. Its totient is φ = 535138560.

The previous prime is 1028545061. The next prime is 1028545087. The reversal of 1028545065 is 5605458201.

1028545065 is a `hidden beast` number, since 102 + 8 + 545 + 0 + 6 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 606489129 + 422055936 = 24627^2 + 20544^2 .

It is not a de Polignac number, because 1028545065 - 2² = 1028545061 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1028545061) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 68847 + ... + 82443.

Almost surely, 2^1028545065 is an apocalyptic number.

1028545065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1028545065 is a deficient number, since it is larger than the sum of its proper divisors (798944547).

1028545065 is a wasteful number, since it uses less digits than its factorization.

1028545065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13690 (or 13646 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 1028545065 is about 32070.9380124748. The cubic root of 1028545065 is about 1009.4258950141.

The spelling of 1028545065 in words is "one billion, twenty-eight million, five hundred forty-five thousand, sixty-five".