1373082181 has 2 divisors, whose sum is σ = 1373082182. Its totient is φ = 1373082180.

The previous prime is 1373082131. The next prime is 1373082229. The reversal of 1373082181 is 1812803731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1158313156 + 214769025 = 34034^2 + 14655^2 .

It is an emirp because it is prime and its reverse (1812803731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1373082181 - 2¹⁷ = 1372951109 is a prime.

It is a super-2 number, since 2×1373082181² = 3770709351559433522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1373082131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686541090 + 686541091.

It is an arithmetic number, because the mean of its divisors is an integer number (686541091).

Almost surely, 2^1373082181 is an apocalyptic number.

It is an amenable number.

1373082181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1373082181 is an equidigital number, since it uses as much as digits as its factorization.

1373082181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 1373082181 is about 37055.1235458742. The cubic root of 1373082181 is about 1111.4728118533.

The spelling of 1373082181 in words is "one billion, three hundred seventy-three million, eighty-two thousand, one hundred eighty-one".