3213172649 has 2 divisors, whose sum is σ = 3213172650. Its totient is φ = 3213172648.

The previous prime is 3213172603. The next prime is 3213172679. The reversal of 3213172649 is 9462713123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1978915225 + 1234257424 = 44485^2 + 35132^2 .

It is a cyclic number.

It is not a de Polignac number, because 3213172649 - 2⁸ = 3213172393 is a prime.

It is not a weakly prime, because it can be changed into another prime (3213172679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1606586324 + 1606586325.

It is an arithmetic number, because the mean of its divisors is an integer number (1606586325).

Almost surely, 2^3213172649 is an apocalyptic number.

It is an amenable number.

3213172649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3213172649 is an equidigital number, since it uses as much as digits as its factorization.

3213172649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 38.

The square root of 3213172649 is about 56684.8537882916. The cubic root of 3213172649 is about 1475.6318501786.

The spelling of 3213172649 in words is "three billion, two hundred thirteen million, one hundred seventy-two thousand, six hundred forty-nine".