1337740381381 has 2 divisors, whose sum is σ = 1337740381382. Its totient is φ = 1337740381380.

The previous prime is 1337740381349. The next prime is 1337740381387. The reversal of 1337740381381 is 1831830477331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1188307109025 + 149433272356 = 1090095^2 + 386566^2 .

It is a cyclic number.

It is not a de Polignac number, because 1337740381381 - 2⁵ = 1337740381349 is a prime.

It is a super-2 number, since 2×1337740381381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1337740381387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 668870190690 + 668870190691.

It is an arithmetic number, because the mean of its divisors is an integer number (668870190691).

Almost surely, 2^{1337740381381} is an apocalyptic number.

It is an amenable number.

1337740381381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1337740381381 is an equidigital number, since it uses as much as digits as its factorization.

1337740381381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 1337740381381 in words is "one trillion, three hundred thirty-seven billion, seven hundred forty million, three hundred eighty-one thousand, three hundred eighty-one".