3489949181 has 2 divisors, whose sum is σ = 3489949182. Its totient is φ = 3489949180.

The previous prime is 3489949163. The next prime is 3489949277. The reversal of 3489949181 is 1819499843.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3053557081 + 436392100 = 55259^2 + 20890^2 .

It is a cyclic number.

It is not a de Polignac number, because 3489949181 - 2¹⁸ = 3489687037 is a prime.

It is a super-2 number, since 2×3489949181² = 24359490571925141522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3489949381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1744974590 + 1744974591.

It is an arithmetic number, because the mean of its divisors is an integer number (1744974591).

Almost surely, 2^3489949181 is an apocalyptic number.

It is an amenable number.

3489949181 is a deficient number, since it is larger than the sum of its proper divisors (1).

3489949181 is an equidigital number, since it uses as much as digits as its factorization.

3489949181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2239488, while the sum is 56.

The square root of 3489949181 is about 59075.7918355734. The cubic root of 3489949181 is about 1516.8397493945.

The spelling of 3489949181 in words is "three billion, four hundred eighty-nine million, nine hundred forty-nine thousand, one hundred eighty-one".