2044021481 has 2 divisors, whose sum is σ = 2044021482. Its totient is φ = 2044021480.

The previous prime is 2044021457. The next prime is 2044021513. The reversal of 2044021481 is 1841204402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1907505625 + 136515856 = 43675^2 + 11684^2 .

It is a cyclic number.

It is not a de Polignac number, because 2044021481 - 2¹⁰ = 2044020457 is a prime.

It is a super-2 number, since 2×2044021481² = 8356047629578866722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2044021481.

It is not a weakly prime, because it can be changed into another prime (2044021411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022010740 + 1022010741.

It is an arithmetic number, because the mean of its divisors is an integer number (1022010741).

Almost surely, 2^2044021481 is an apocalyptic number.

It is an amenable number.

2044021481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2044021481 is an equidigital number, since it uses as much as digits as its factorization.

2044021481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 2044021481 is about 45210.8557870784. The cubic root of 2044021481 is about 1269.0979770900.

Adding to 2044021481 its reverse (1841204402), we get a palindrome (3885225883).

The spelling of 2044021481 in words is "two billion, forty-four million, twenty-one thousand, four hundred eighty-one".