1943108378131 has 2 divisors, whose sum is σ = 1943108378132. Its totient is φ = 1943108378130.

The previous prime is 1943108378129. The next prime is 1943108378179. The reversal of 1943108378131 is 1318738013491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1943108378131 - 2¹ = 1943108378129 is a prime.

It is a super-2 number, since 2×1943108378131² (a number of 25 digits) contains 22 as substring.

Together with 1943108378129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1943108378831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 971554189065 + 971554189066.

It is an arithmetic number, because the mean of its divisors is an integer number (971554189066).

Almost surely, 2^{1943108378131} is an apocalyptic number.

1943108378131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1943108378131 is an equidigital number, since it uses as much as digits as its factorization.

1943108378131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 1943108378131 in words is "one trillion, nine hundred forty-three billion, one hundred eight million, three hundred seventy-eight thousand, one hundred thirty-one".