381437411281 has 2 divisors, whose sum is σ = 381437411282. Its totient is φ = 381437411280.

The previous prime is 381437411227. The next prime is 381437411287. The reversal of 381437411281 is 182114734183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251794207681 + 129643203600 = 501791^2 + 360060^2 .

It is a cyclic number.

It is not a de Polignac number, because 381437411281 - 2¹³ = 381437403089 is a prime.

It is a super-2 number, since 2×381437411281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (381437411287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190718705640 + 190718705641.

It is an arithmetic number, because the mean of its divisors is an integer number (190718705641).

Almost surely, 2^381437411281 is an apocalyptic number.

It is an amenable number.

381437411281 is a deficient number, since it is larger than the sum of its proper divisors (1).

381437411281 is an equidigital number, since it uses as much as digits as its factorization.

381437411281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 43.

The spelling of 381437411281 in words is "three hundred eighty-one billion, four hundred thirty-seven million, four hundred eleven thousand, two hundred eighty-one".