1340830792181 has 2 divisors, whose sum is σ = 1340830792182. Its totient is φ = 1340830792180.

The previous prime is 1340830792157. The next prime is 1340830792267. The reversal of 1340830792181 is 1812970380431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1320534231025 + 20296561156 = 1149145^2 + 142466^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1340830792181 is a prime.

It is a super-2 number, since 2×1340830792181² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340830792141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670415396090 + 670415396091.

It is an arithmetic number, because the mean of its divisors is an integer number (670415396091).

Almost surely, 2^{1340830792181} is an apocalyptic number.

It is an amenable number.

1340830792181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340830792181 is an equidigital number, since it uses as much as digits as its factorization.

1340830792181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 1340830792181 in words is "one trillion, three hundred forty billion, eight hundred thirty million, seven hundred ninety-two thousand, one hundred eighty-one".