386865879642 has 96 divisors (see below), whose sum is σ = 945809294976. Its totient is φ = 113262105600.

The previous prime is 386865879641. The next prime is 386865879649. The reversal of 386865879642 is 246978568683.

386865879642 is a `hidden beast` number, since 38 + 6 + 8 + 6 + 587 + 9 + 6 + 4 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (386865879641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 604818 + ... + 1067490.

It is an arithmetic number, because the mean of its divisors is an integer number (9852180156).

Almost surely, 2^386865879642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 386865879642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (472904647488).

386865879642 is an abundant number, since it is smaller than the sum of its proper divisors (558943415334).

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

386865879642 is a wasteful number, since it uses less digits than its factorization.

386865879642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462836 (or 462833 counting only the distinct ones).

The product of its digits is 836075520, while the sum is 72.

The spelling of 386865879642 in words is "three hundred eighty-six billion, eight hundred sixty-five million, eight hundred seventy-nine thousand, six hundred forty-two".