1381114619891 has 2 divisors, whose sum is σ = 1381114619892. Its totient is φ = 1381114619890.

The previous prime is 1381114619887. The next prime is 1381114619953. The reversal of 1381114619891 is 1989164111831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1381114619891 - 2² = 1381114619887 is a prime.

It is a super-3 number, since 3×1381114619891³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (1381114619791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690557309945 + 690557309946.

It is an arithmetic number, because the mean of its divisors is an integer number (690557309946).

Almost surely, 2^{1381114619891} is an apocalyptic number.

1381114619891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381114619891 is an equidigital number, since it uses as much as digits as its factorization.

1381114619891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 53.

The spelling of 1381114619891 in words is "one trillion, three hundred eighty-one billion, one hundred fourteen million, six hundred nineteen thousand, eight hundred ninety-one".