349280974181 has 2 divisors, whose sum is σ = 349280974182. Its totient is φ = 349280974180.

The previous prime is 349280974151. The next prime is 349280974187. The reversal of 349280974181 is 181479082943.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 299176180900 + 50104793281 = 546970^2 + 223841^2 .

It is a cyclic number.

It is not a de Polignac number, because 349280974181 - 2⁶ = 349280974117 is a prime.

It is a super-2 number, since 2×349280974181² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349280974187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174640487090 + 174640487091.

It is an arithmetic number, because the mean of its divisors is an integer number (174640487091).

Almost surely, 2^349280974181 is an apocalyptic number.

It is an amenable number.

349280974181 is a deficient number, since it is larger than the sum of its proper divisors (1).

349280974181 is an equidigital number, since it uses as much as digits as its factorization.

349280974181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3483648, while the sum is 56.

The spelling of 349280974181 in words is "three hundred forty-nine billion, two hundred eighty million, nine hundred seventy-four thousand, one hundred eighty-one".