3491631389 has 2 divisors, whose sum is σ = 3491631390. Its totient is φ = 3491631388.

The previous prime is 3491631359. The next prime is 3491631413. The reversal of 3491631389 is 9831361943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2564916025 + 926715364 = 50645^2 + 30442^2 .

It is a cyclic number.

It is not a de Polignac number, because 3491631389 - 2²⁰ = 3490582813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3491631359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1745815694 + 1745815695.

It is an arithmetic number, because the mean of its divisors is an integer number (1745815695).

Almost surely, 2^3491631389 is an apocalyptic number.

It is an amenable number.

3491631389 is a deficient number, since it is larger than the sum of its proper divisors (1).

3491631389 is an equidigital number, since it uses as much as digits as its factorization.

3491631389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 419904, while the sum is 47.

The square root of 3491631389 is about 59090.0278304216. The cubic root of 3491631389 is about 1517.0834234389.

The spelling of 3491631389 in words is "three billion, four hundred ninety-one million, six hundred thirty-one thousand, three hundred eighty-nine".