3858470640 has 480 divisors, whose sum is σ = 14195091456. Its totient is φ = 972933120.

The previous prime is 3858470621. The next prime is 3858470683. The reversal of 3858470640 is 460748583.

3858470640 is a `hidden beast` number, since 3 + 8 + 584 + 7 + 0 + 64 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 37460829 + ... + 37460931.

Almost surely, 2^3858470640 is an apocalyptic number.

3858470640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3858470640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7097545728).

3858470640 is an abundant number, since it is smaller than the sum of its proper divisors (10336620816).

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

3858470640 is a wasteful number, since it uses less digits than its factorization.

3858470640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The square root of 3858470640 is about 62116.5890885841. The cubic root of 3858470640 is about 1568.4538092786.

The spelling of 3858470640 in words is "three billion, eight hundred fifty-eight million, four hundred seventy thousand, six hundred forty".