3645672313 has 4 divisors (see below), whose sum is σ = 3645904500. Its totient is φ = 3645440128.

The previous prime is 3645672307. The next prime is 3645672319. The reversal of 3645672313 is 3132765463.

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

It is an interprime number because it is at equal distance from previous prime (3645672307) and next prime (3645672319).

It can be written as a sum of positive squares in 2 ways, for example, as 2332117264 + 1313555049 = 48292^2 + 36243^2 .

It is a cyclic number.

It is not a de Polignac number, because 3645672313 - 2⁵ = 3645672281 is a prime.

It is a super-2 number, since 2×3645672313² = 26581853227549539938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3645672319) 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 in 3 ways as a sum of consecutive naturals, for example, 90688 + ... + 124561.

It is an arithmetic number, because the mean of its divisors is an integer number (911476125).

Almost surely, 2^3645672313 is an apocalyptic number.

It is an amenable number.

3645672313 is a deficient number, since it is larger than the sum of its proper divisors (232187).

3645672313 is a wasteful number, since it uses less digits than its factorization.

3645672313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232186.

The product of its digits is 272160, while the sum is 40.

The square root of 3645672313 is about 60379.4030526967. The cubic root of 3645672313 is about 1539.0729666908.

The spelling of 3645672313 in words is "three billion, six hundred forty-five million, six hundred seventy-two thousand, three hundred thirteen".