3149938691 has 2 divisors, whose sum is σ = 3149938692. Its totient is φ = 3149938690.

The previous prime is 3149938607. The next prime is 3149938697. The reversal of 3149938691 is 1968399413.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3149938691 - 2²² = 3145744387 is a prime.

It is a super-2 number, since 2×3149938691² = 19844227514117586962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3149938697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1574969345 + 1574969346.

It is an arithmetic number, because the mean of its divisors is an integer number (1574969346).

Almost surely, 2^3149938691 is an apocalyptic number.

3149938691 is a deficient number, since it is larger than the sum of its proper divisors (1).

3149938691 is an equidigital number, since it uses as much as digits as its factorization.

3149938691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1259712, while the sum is 53.

The square root of 3149938691 is about 56124.3146149688. The cubic root of 3149938691 is about 1465.8876984788.

The spelling of 3149938691 in words is "three billion, one hundred forty-nine million, nine hundred thirty-eight thousand, six hundred ninety-one".