1693273423081 has 2 divisors, whose sum is σ = 1693273423082. Its totient is φ = 1693273423080.

The previous prime is 1693273423043. The next prime is 1693273423139. The reversal of 1693273423081 is 1803243723961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1395195641856 + 298077781225 = 1181184^2 + 545965^2 .

It is a cyclic number.

It is not a de Polignac number, because 1693273423081 - 2³⁵ = 1658913684713 is a prime.

It is a super-2 number, since 2×1693273423081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1693273423001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 846636711540 + 846636711541.

It is an arithmetic number, because the mean of its divisors is an integer number (846636711541).

Almost surely, 2^{1693273423081} is an apocalyptic number.

It is an amenable number.

1693273423081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1693273423081 is an equidigital number, since it uses as much as digits as its factorization.

1693273423081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 1693273423081 in words is "one trillion, six hundred ninety-three billion, two hundred seventy-three million, four hundred twenty-three thousand, eighty-one".