1028325645 has 128 divisors (see below), whose sum is σ = 2013696000. Its totient is φ = 496419840.

The previous prime is 1028325629. The next prime is 1028325647. The reversal of 1028325645 is 5465238201.

1028325645 is a `hidden beast` number, since 1 + 0 + 2 + 8 + 3 + 2 + 5 + 645 = 666.

It is not a de Polignac number, because 1028325645 - 2⁴ = 1028325629 is a prime.

It is a super-3 number, since 3×1028325645³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028325647) by changing a digit.

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 127 ways as a sum of consecutive naturals, for example, 4490391 + ... + 4490619.

It is an arithmetic number, because the mean of its divisors is an integer number (15732000).

Almost surely, 2^1028325645 is an apocalyptic number.

1028325645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1028325645 is a deficient number, since it is larger than the sum of its proper divisors (985370355).

1028325645 is a wasteful number, since it uses less digits than its factorization.

1028325645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 1028325645 is about 32067.5169759057. The cubic root of 1028325645 is about 1009.3541094764.

The spelling of 1028325645 in words is "one billion, twenty-eight million, three hundred twenty-five thousand, six hundred forty-five".