3655728146 has 64 divisors (see below), whose sum is σ = 6681692160. Its totient is φ = 1466277120.

The previous prime is 3655728121. The next prime is 3655728149. The reversal of 3655728146 is 6418275563.

It is a self number, because there is not a number n which added to its sum of digits gives 3655728146.

It is not an unprimeable number, because it can be changed into a prime (3655728149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6402041 + ... + 6402611.

It is an arithmetic number, because the mean of its divisors is an integer number (104401440).

Almost surely, 2^3655728146 is an apocalyptic number.

3655728146 is a deficient number, since it is larger than the sum of its proper divisors (3025964014).

3655728146 is a wasteful number, since it uses less digits than its factorization.

3655728146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999.

The product of its digits is 1209600, while the sum is 47.

The square root of 3655728146 is about 60462.6177567594. The cubic root of 3655728146 is about 1540.4867390984.

The spelling of 3655728146 in words is "three billion, six hundred fifty-five million, seven hundred twenty-eight thousand, one hundred forty-six".