1044020381 has 2 divisors, whose sum is σ = 1044020382. Its totient is φ = 1044020380.

The previous prime is 1044020359. The next prime is 1044020401. The reversal of 1044020381 is 1830204401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1027779481 + 16240900 = 32059^2 + 4030^2 .

It is a cyclic number.

It is not a de Polignac number, because 1044020381 - 2²² = 1039826077 is a prime.

It is a super-2 number, since 2×1044020381² = 2179957111886770322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1044020321) by changing a digit.

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 as a sum of consecutive naturals, namely, 522010190 + 522010191.

It is an arithmetic number, because the mean of its divisors is an integer number (522010191).

Almost surely, 2^1044020381 is an apocalyptic number.

It is an amenable number.

1044020381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1044020381 is an equidigital number, since it uses as much as digits as its factorization.

1044020381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1044020381 is about 32311.3042293251. The cubic root of 1044020381 is about 1014.4632657720.

Adding to 1044020381 its reverse (1830204401), we get a palindrome (2874224782).

It can be divided in two parts, 1044020 and 381, that added together give a palindrome (1044401).

The spelling of 1044020381 in words is "one billion, forty-four million, twenty thousand, three hundred eighty-one".