3643656922 has 4 divisors (see below), whose sum is σ = 5465485386. Its totient is φ = 1821828460.

The previous prime is 3643656899. The next prime is 3643656931. The reversal of 3643656922 is 2296563463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2296563463 = 41 ⋅56013743.

It can be written as a sum of positive squares in only one way, i.e., 3642243201 + 1413721 = 60351^2 + 1189^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 910914229 + ... + 910914232.

Almost surely, 2^3643656922 is an apocalyptic number.

3643656922 is a deficient number, since it is larger than the sum of its proper divisors (1821828464).

3643656922 is a wasteful number, since it uses less digits than its factorization.

3643656922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821828463.

The product of its digits is 1399680, while the sum is 46.

The square root of 3643656922 is about 60362.7113539476. The cubic root of 3643656922 is about 1538.7893056540.

The spelling of 3643656922 in words is "three billion, six hundred forty-three million, six hundred fifty-six thousand, nine hundred twenty-two".