1943112203881 has 2 divisors, whose sum is σ = 1943112203882. Its totient is φ = 1943112203880.

The previous prime is 1943112203863. The next prime is 1943112203899. The reversal of 1943112203881 is 1883022113491.

It is a balanced prime because it is at equal distance from previous prime (1943112203863) and next prime (1943112203899).

It can be written as a sum of positive squares in only one way, i.e., 1603619528281 + 339492675600 = 1266341^2 + 582660^2 .

It is a cyclic number.

It is not a de Polignac number, because 1943112203881 - 2²⁷ = 1942977986153 is a prime.

It is a super-2 number, since 2×1943112203881² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1943112204881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 971556101940 + 971556101941.

It is an arithmetic number, because the mean of its divisors is an integer number (971556101941).

Almost surely, 2^{1943112203881} is an apocalyptic number.

It is an amenable number.

1943112203881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1943112203881 is an equidigital number, since it uses as much as digits as its factorization.

1943112203881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 1943112203881 in words is "one trillion, nine hundred forty-three billion, one hundred twelve million, two hundred three thousand, eight hundred eighty-one".