387869767380 has 144 divisors (see below), whose sum is σ = 1246889286720. Its totient is φ = 100095289920.

The previous prime is 387869767357. The next prime is 387869767381. The reversal of 387869767380 is 83767968783.

387869767380 is a `hidden beast` number, since 3 + 87 + 86 + 97 + 6 + 7 + 380 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 387869767299 and 387869767308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387869767381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 145227 + ... + 892653.

It is an arithmetic number, because the mean of its divisors is an integer number (8658953380).

Almost surely, 2^387869767380 is an apocalyptic number.

387869767380 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 387869767380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (623444643360).

387869767380 is an abundant number, since it is smaller than the sum of its proper divisors (859019519340).

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

387869767380 is a wasteful number, since it uses less digits than its factorization.

387869767380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747507 (or 747468 counting only the distinct ones).

The product of its (nonzero) digits is 512096256, while the sum is 72.

The spelling of 387869767380 in words is "three hundred eighty-seven billion, eight hundred sixty-nine million, seven hundred sixty-seven thousand, three hundred eighty".