1045220444 has 6 divisors (see below), whose sum is σ = 1829135784. Its totient is φ = 522610220.

The previous prime is 1045220431. The next prime is 1045220447. The reversal of 1045220444 is 4440225401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045220447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130652552 + ... + 130652559.

It is an arithmetic number, because the mean of its divisors is an integer number (304855964).

Almost surely, 2^1045220444 is an apocalyptic number.

It is an amenable number.

1045220444 is a deficient number, since it is larger than the sum of its proper divisors (783915340).

1045220444 is a wasteful number, since it uses less digits than its factorization.

1045220444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261305115 (or 261305113 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 1045220444 is about 32329.8692233668. The cubic root of 1045220444 is about 1014.8518129978.

Adding to 1045220444 its reverse (4440225401), we get a palindrome (5485445845).

The spelling of 1045220444 in words is "one billion, forty-five million, two hundred twenty thousand, four hundred forty-four".