3643723493 has 2 divisors, whose sum is σ = 3643723494. Its totient is φ = 3643723492.

The previous prime is 3643723471. The next prime is 3643723513. The reversal of 3643723493 is 3943273463.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3166650529 + 477072964 = 56273^2 + 21842^2 .

It is a cyclic number.

It is not a de Polignac number, because 3643723493 - 2⁶ = 3643723429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3643723393) 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, 1821861746 + 1821861747.

It is an arithmetic number, because the mean of its divisors is an integer number (1821861747).

Almost surely, 2^3643723493 is an apocalyptic number.

It is an amenable number.

3643723493 is a deficient number, since it is larger than the sum of its proper divisors (1).

3643723493 is an equidigital number, since it uses as much as digits as its factorization.

3643723493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 44.

The square root of 3643723493 is about 60363.2627762947. The cubic root of 3643723493 is about 1538.7986770192.

The spelling of 3643723493 in words is "three billion, six hundred forty-three million, seven hundred twenty-three thousand, four hundred ninety-three".