386380491840 has 504 divisors, whose sum is σ = 1627343415360. Its totient is φ = 83666774016.

The previous prime is 386380491817. The next prime is 386380491851. The reversal of 386380491840 is 48194083683.

386380491840 is a `hidden beast` number, since 3 + 86 + 38 + 0 + 491 + 8 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (504).

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 2609229 + ... + 2753331.

Almost surely, 2^386380491840 is an apocalyptic number.

386380491840 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 386380491840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (813671707680).

386380491840 is an abundant number, since it is smaller than the sum of its proper divisors (1240962923520).

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

386380491840 is a wasteful number, since it uses less digits than its factorization.

386380491840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144159 (or 144139 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The spelling of 386380491840 in words is "three hundred eighty-six billion, three hundred eighty million, four hundred ninety-one thousand, eight hundred forty".