3149181361 has 2 divisors, whose sum is σ = 3149181362. Its totient is φ = 3149181360.

The previous prime is 3149181323. The next prime is 3149181389. The reversal of 3149181361 is 1631819413.

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., 2944147600 + 205033761 = 54260^2 + 14319^2 .

It is a cyclic number.

It is not a de Polignac number, because 3149181361 - 2¹⁵ = 3149148593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3149181361.

It is not a weakly prime, because it can be changed into another prime (3149187361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1574590680 + 1574590681.

It is an arithmetic number, because the mean of its divisors is an integer number (1574590681).

Almost surely, 2^3149181361 is an apocalyptic number.

It is an amenable number.

3149181361 is a deficient number, since it is larger than the sum of its proper divisors (1).

3149181361 is an equidigital number, since it uses as much as digits as its factorization.

3149181361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 37.

The square root of 3149181361 is about 56117.5673118499. The cubic root of 3149181361 is about 1465.7702094499.

The spelling of 3149181361 in words is "three billion, one hundred forty-nine million, one hundred eighty-one thousand, three hundred sixty-one".