3643995373 has 4 divisors (see below), whose sum is σ = 3858348060. Its totient is φ = 3429642688.

The previous prime is 3643995371. The next prime is 3643995403. The reversal of 3643995373 is 3735993463.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2138322564 + 1505672809 = 46242^2 + 38803^2 .

It is a cyclic number.

It is not a de Polignac number, because 3643995373 - 2¹ = 3643995371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3643995373.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3643995371) 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 in 3 ways as a sum of consecutive naturals, for example, 107176318 + ... + 107176351.

It is an arithmetic number, because the mean of its divisors is an integer number (964587015).

Almost surely, 2^3643995373 is an apocalyptic number.

It is an amenable number.

3643995373 is a deficient number, since it is larger than the sum of its proper divisors (214352687).

3643995373 is a wasteful number, since it uses less digits than its factorization.

3643995373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214352686.

The product of its digits is 5511240, while the sum is 52.

The square root of 3643995373 is about 60365.5147662968. The cubic root of 3643995373 is about 1538.8369490579.

The spelling of 3643995373 in words is "three billion, six hundred forty-three million, nine hundred ninety-five thousand, three hundred seventy-three".