3611456645 has 4 divisors (see below), whose sum is σ = 4333747980. Its totient is φ = 2889165312.

The previous prime is 3611456633. The next prime is 3611456647. The reversal of 3611456645 is 5466541163.

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 2754255361 + 857201284 = 52481^2 + 29278^2 .

It is a cyclic number.

It is not a de Polignac number, because 3611456645 - 2²² = 3607262341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3611456647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361145660 + ... + 361145669.

It is an arithmetic number, because the mean of its divisors is an integer number (1083436995).

Almost surely, 2^3611456645 is an apocalyptic number.

It is an amenable number.

3611456645 is a deficient number, since it is larger than the sum of its proper divisors (722291335).

3611456645 is an equidigital number, since it uses as much as digits as its factorization.

3611456645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722291334.

The product of its digits is 259200, while the sum is 41.

The square root of 3611456645 is about 60095.3962047011. The cubic root of 3611456645 is about 1534.2429459788.

The spelling of 3611456645 in words is "three billion, six hundred eleven million, four hundred fifty-six thousand, six hundred forty-five".