3897945783 has 12 divisors (see below), whose sum is σ = 5671465488. Its totient is φ = 2579661600.

The previous prime is 3897945739. The next prime is 3897945787. The reversal of 3897945783 is 3875497983.

3897945783 is a `hidden beast` number, since 38 + 9 + 79 + 457 + 83 = 666.

It is not a de Polignac number, because 3897945783 - 2⁶ = 3897945719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3897945783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3897945787) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1579443 + ... + 1581908.

It is an arithmetic number, because the mean of its divisors is an integer number (472622124).

Almost surely, 2^3897945783 is an apocalyptic number.

3897945783 is a deficient number, since it is larger than the sum of its proper divisors (1773519705).

3897945783 is a wasteful number, since it uses less digits than its factorization.

3897945783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161494 (or 3161491 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 63.

The square root of 3897945783 is about 62433.5309188901. The cubic root of 3897945783 is about 1573.7845037620.

The spelling of 3897945783 in words is "three billion, eight hundred ninety-seven million, nine hundred forty-five thousand, seven hundred eighty-three".