381530254578 has 48 divisors (see below), whose sum is σ = 835523291808. Its totient is φ = 115187140800.

The previous prime is 381530254559. The next prime is 381530254583. The reversal of 381530254578 is 875452035183.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 381530254578.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4807750 + ... + 4886462.

It is an arithmetic number, because the mean of its divisors is an integer number (17406735246).

Almost surely, 2^381530254578 is an apocalyptic number.

381530254578 is an abundant number, since it is smaller than the sum of its proper divisors (453993037230).

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

381530254578 is a wasteful number, since it uses less digits than its factorization.

381530254578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79271 (or 79000 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 51.

The spelling of 381530254578 in words is "three hundred eighty-one billion, five hundred thirty million, two hundred fifty-four thousand, five hundred seventy-eight".