3149181389 has 2 divisors, whose sum is σ = 3149181390. Its totient is φ = 3149181388.

The previous prime is 3149181361. The next prime is 3149181419. The reversal of 3149181389 is 9831819413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3132640900 + 16540489 = 55970^2 + 4067^2 .

It is a cyclic number.

It is not a de Polignac number, because 3149181389 - 2¹² = 3149177293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3149189389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1574590694 + 1574590695.

It is an arithmetic number, because the mean of its divisors is an integer number (1574590695).

Almost surely, 2^3149181389 is an apocalyptic number.

It is an amenable number.

3149181389 is a deficient number, since it is larger than the sum of its proper divisors (1).

3149181389 is an equidigital number, since it uses as much as digits as its factorization.

3149181389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 47.

The square root of 3149181389 is about 56117.5675613261. The cubic root of 3149181389 is about 1465.7702137940.

The spelling of 3149181389 in words is "three billion, one hundred forty-nine million, one hundred eighty-one thousand, three hundred eighty-nine".