384061019581 has 4 divisors (see below), whose sum is σ = 393428361564. Its totient is φ = 374693677600.

The previous prime is 384061019569. The next prime is 384061019597. The reversal of 384061019581 is 185910160483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 185910160483 = 1579 ⋅117739177.

It can be written as a sum of positive squares in 2 ways, for example, as 32945517081 + 351115502500 = 181509^2 + 592550^2 .

It is a cyclic number.

It is not a de Polignac number, because 384061019581 - 2³¹ = 381913535933 is a prime.

It is a super-2 number, since 2×384061019581² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384061019081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4683670930 + ... + 4683671011.

It is an arithmetic number, because the mean of its divisors is an integer number (98357090391).

Almost surely, 2^384061019581 is an apocalyptic number.

It is an amenable number.

384061019581 is a deficient number, since it is larger than the sum of its proper divisors (9367341983).

384061019581 is an equidigital number, since it uses as much as digits as its factorization.

384061019581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9367341982.

The product of its (nonzero) digits is 207360, while the sum is 46.

The spelling of 384061019581 in words is "three hundred eighty-four billion, sixty-one million, nineteen thousand, five hundred eighty-one".