3657746949 has 8 divisors (see below), whose sum is σ = 4959657120. Its totient is φ = 2397167376.

The previous prime is 3657746927. The next prime is 3657746993. The reversal of 3657746949 is 9496477563.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3657746949 - 2⁹ = 3657746437 is a prime.

It is a super-2 number, since 2×3657746949² = 26758225485837617202, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3657746892 and 3657746901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3657746849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10332442 + ... + 10332795.

It is an arithmetic number, because the mean of its divisors is an integer number (619957140).

Almost surely, 2^3657746949 is an apocalyptic number.

It is an amenable number.

3657746949 is a deficient number, since it is larger than the sum of its proper divisors (1301910171).

3657746949 is a wasteful number, since it uses less digits than its factorization.

3657746949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20665299.

The product of its digits is 34292160, while the sum is 60.

The square root of 3657746949 is about 60479.3100903111. The cubic root of 3657746949 is about 1540.7702546148.

The spelling of 3657746949 in words is "three billion, six hundred fifty-seven million, seven hundred forty-six thousand, nine hundred forty-nine".