3897945782 has 8 divisors (see below), whose sum is σ = 6004943616. Its totient is φ = 1896297912.

The previous prime is 3897945739. The next prime is 3897945787. The reversal of 3897945782 is 2875497983.

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

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26337398 + ... + 26337545.

It is an arithmetic number, because the mean of its divisors is an integer number (750617952).

Almost surely, 2^3897945782 is an apocalyptic number.

3897945782 is a deficient number, since it is larger than the sum of its proper divisors (2106997834).

3897945782 is a wasteful number, since it uses less digits than its factorization.

3897945782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52674982.

The product of its digits is 30481920, while the sum is 62.

The square root of 3897945782 is about 62433.5309108815. The cubic root of 3897945782 is about 1573.7845036274.

The spelling of 3897945782 in words is "three billion, eight hundred ninety-seven million, nine hundred forty-five thousand, seven hundred eighty-two".