1045164321 has 48 divisors (see below), whose sum is σ = 1667952000. Its totient is φ = 628379136.

The previous prime is 1045164317. The next prime is 1045164359. The reversal of 1045164321 is 1234615401.

It is a happy number.

1045164321 is a `hidden beast` number, since 10 + 4 + 5 + 1 + 643 + 2 + 1 = 666.

It is not a de Polignac number, because 1045164321 - 2² = 1045164317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1045164311) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 256105 + ... + 260153.

It is an arithmetic number, because the mean of its divisors is an integer number (34749000).

Almost surely, 2^1045164321 is an apocalyptic number.

It is an amenable number.

1045164321 is a deficient number, since it is larger than the sum of its proper divisors (622787679).

1045164321 is a wasteful number, since it uses less digits than its factorization.

1045164321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4150 (or 4147 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1045164321 is about 32329.0012372792. The cubic root of 1045164321 is about 1014.8336485528.

Adding to 1045164321 its reverse (1234615401), we get a palindrome (2279779722).

The spelling of 1045164321 in words is "one billion, forty-five million, one hundred sixty-four thousand, three hundred twenty-one".