1029798645 has 32 divisors (see below), whose sum is σ = 1681273344. Its totient is φ = 538099200.

The previous prime is 1029798617. The next prime is 1029798673. The reversal of 1029798645 is 5468979201.

It is an interprime number because it is at equal distance from previous prime (1029798617) and next prime (1029798673).

It is not a de Polignac number, because 1029798645 - 2¹⁰ = 1029797621 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 245889 + ... + 250041.

It is an arithmetic number, because the mean of its divisors is an integer number (52539792).

Almost surely, 2^1029798645 is an apocalyptic number.

1029798645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1029798645 is a deficient number, since it is larger than the sum of its proper divisors (651474699).

1029798645 is a wasteful number, since it uses less digits than its factorization.

1029798645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4493.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The square root of 1029798645 is about 32090.4759235509. The cubic root of 1029798645 is about 1009.8358211063.

The spelling of 1029798645 in words is "one billion, twenty-nine million, seven hundred ninety-eight thousand, six hundred forty-five".