3657643348 has 6 divisors (see below), whose sum is σ = 6400875866. Its totient is φ = 1828821672.

The previous prime is 3657643343. The next prime is 3657643397. The reversal of 3657643348 is 8433467563.

It can be written as a sum of positive squares in only one way, i.e., 3009839044 + 647804304 = 54862^2 + 25452^2 .

It is a super-2 number, since 2×3657643348² = 26756709722337298208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3657643343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 457205415 + ... + 457205422.

Almost surely, 2^3657643348 is an apocalyptic number.

It is an amenable number.

3657643348 is a deficient number, since it is larger than the sum of its proper divisors (2743232518).

3657643348 is a wasteful number, since it uses less digits than its factorization.

3657643348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914410841 (or 914410839 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 49.

The square root of 3657643348 is about 60478.4535847272. The cubic root of 3657643348 is about 1540.7557076957.

The spelling of 3657643348 in words is "three billion, six hundred fifty-seven million, six hundred forty-three thousand, three hundred forty-eight".