3897228065 has 32 divisors (see below), whose sum is σ = 4855769856. Its totient is φ = 3001173760.

The previous prime is 3897228047. The next prime is 3897228103. The reversal of 3897228065 is 5608227983.

3897228065 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3897228065 - 2²⁰ = 3896179489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3672635 + ... + 3673695.

It is an arithmetic number, because the mean of its divisors is an integer number (151742808).

Almost surely, 2^3897228065 is an apocalyptic number.

It is an amenable number.

3897228065 is a deficient number, since it is larger than the sum of its proper divisors (958541791).

3897228065 is a wasteful number, since it uses less digits than its factorization.

3897228065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 3897228065 is about 62427.7827974052. The cubic root of 3897228065 is about 1573.6879056338.

The spelling of 3897228065 in words is "three billion, eight hundred ninety-seven million, two hundred twenty-eight thousand, sixty-five".