3953490181 has 2 divisors, whose sum is σ = 3953490182. Its totient is φ = 3953490180.

The previous prime is 3953490137. The next prime is 3953490187. The reversal of 3953490181 is 1810943593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3714293025 + 239197156 = 60945^2 + 15466^2 .

It is a cyclic number.

It is not a de Polignac number, because 3953490181 - 2⁹ = 3953489669 is a prime.

It is a super-2 number, since 2×3953490181² = 31260169222526825522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3953490187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1976745090 + 1976745091.

It is an arithmetic number, because the mean of its divisors is an integer number (1976745091).

Almost surely, 2^3953490181 is an apocalyptic number.

It is an amenable number.

3953490181 is a deficient number, since it is larger than the sum of its proper divisors (1).

3953490181 is an equidigital number, since it uses as much as digits as its factorization.

3953490181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 3953490181 is about 62876.7857082405. The cubic root of 3953490181 is about 1581.2245728730.

The spelling of 3953490181 in words is "three billion, nine hundred fifty-three million, four hundred ninety thousand, one hundred eighty-one".