1381044481 has 2 divisors, whose sum is σ = 1381044482. Its totient is φ = 1381044480.

The previous prime is 1381044463. The next prime is 1381044491. The reversal of 1381044481 is 1844401831.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1145145600 + 235898881 = 33840^2 + 15359^2 .

It is a cyclic number.

It is not a de Polignac number, because 1381044481 - 2⁵ = 1381044449 is a prime.

It is a super-2 number, since 2×1381044481² = 3814567717001118722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1381044421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690522240 + 690522241.

It is an arithmetic number, because the mean of its divisors is an integer number (690522241).

Almost surely, 2^1381044481 is an apocalyptic number.

It is an amenable number.

1381044481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381044481 is an equidigital number, since it uses as much as digits as its factorization.

1381044481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 1381044481 is about 37162.4068246393. The cubic root of 1381044481 is about 1113.6170944046.

The spelling of 1381044481 in words is "one billion, three hundred eighty-one million, forty-four thousand, four hundred eighty-one".