1044213681 has 32 divisors (see below), whose sum is σ = 1616908288. Its totient is φ = 587088000.

The previous prime is 1044213679. The next prime is 1044213719. The reversal of 1044213681 is 1863124401.

It is not a de Polignac number, because 1044213681 - 2¹ = 1044213679 is a prime.

It is a super-2 number, since 2×1044213681² = 2180764423175139522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1044213671) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1150830 + ... + 1151736.

It is an arithmetic number, because the mean of its divisors is an integer number (50528384).

Almost surely, 2^1044213681 is an apocalyptic number.

It is an amenable number.

1044213681 is a deficient number, since it is larger than the sum of its proper divisors (572694607).

1044213681 is an equidigital number, since it uses as much as digits as its factorization.

1044213681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 1044213681 is about 32314.2953040910. The cubic root of 1044213681 is about 1014.5258710786.

The spelling of 1044213681 in words is "one billion, forty-four million, two hundred thirteen thousand, six hundred eighty-one".