3121824749 has 2 divisors, whose sum is σ = 3121824750. Its totient is φ = 3121824748.

The previous prime is 3121824731. The next prime is 3121824809. The reversal of 3121824749 is 9474281213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1770894724 + 1350930025 = 42082^2 + 36755^2 .

It is an emirp because it is prime and its reverse (9474281213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3121824749 - 2⁸ = 3121824493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3121824449) 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, 1560912374 + 1560912375.

It is an arithmetic number, because the mean of its divisors is an integer number (1560912375).

Almost surely, 2^3121824749 is an apocalyptic number.

It is an amenable number.

3121824749 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121824749 is an equidigital number, since it uses as much as digits as its factorization.

3121824749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 41.

The square root of 3121824749 is about 55873.2919112522. The cubic root of 3121824749 is about 1461.5135284867.

The spelling of 3121824749 in words is "three billion, one hundred twenty-one million, eight hundred twenty-four thousand, seven hundred forty-nine".