3870365840 has 40 divisors (see below), whose sum is σ = 9816657408. Its totient is φ = 1407405440.

The previous prime is 3870365833. The next prime is 3870365857. The reversal of 3870365840 is 485630783.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 3870365791 and 3870365800.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2198192 + ... + 2199951.

Almost surely, 2^3870365840 is an apocalyptic number.

It is an amenable number.

3870365840 is an abundant number, since it is smaller than the sum of its proper divisors (5946291568).

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

3870365840 is a wasteful number, since it uses less digits than its factorization.

3870365840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4398167 (or 4398161 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 3870365840 is about 62212.2643857302. The cubic root of 3870365840 is about 1570.0639404903.

The spelling of 3870365840 in words is "three billion, eight hundred seventy million, three hundred sixty-five thousand, eight hundred forty".