3897782000 has 80 divisors (see below), whose sum is σ = 10771280832. Its totient is φ = 1336377600.

The previous prime is 3897781919. The next prime is 3897782003. The reversal of 3897782000 is 2877983.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3897782003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125207 + ... + 153206.

Almost surely, 2^3897782000 is an apocalyptic number.

It is an amenable number.

3897782000 is an abundant number, since it is smaller than the sum of its proper divisors (6873498832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3897782000 is a wasteful number, since it uses less digits than its factorization.

3897782000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278443 (or 278427 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 3897782000 is about 62432.2192461553. The cubic root of 3897782000 is about 1573.7624611467.

The spelling of 3897782000 in words is "three billion, eight hundred ninety-seven million, seven hundred eighty-two thousand".