384081819 has 16 divisors (see below), whose sum is σ = 561759744. Its totient is φ = 231487200.

The previous prime is 384081811. The next prime is 384081821. The reversal of 384081819 is 918180483.

It is not a de Polignac number, because 384081819 - 2³ = 384081811 is a prime.

It is a super-2 number, since 2×384081819² = 295037687372697522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (384081811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26179 + ... + 38124.

It is an arithmetic number, because the mean of its divisors is an integer number (35109984).

Almost surely, 2^384081819 is an apocalyptic number.

384081819 is a deficient number, since it is larger than the sum of its proper divisors (177677925).

384081819 is a wasteful number, since it uses less digits than its factorization.

384081819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64498.

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 384081819 is about 19598.0054852528. The cubic root of 384081819 is about 726.8998567272.

The spelling of 384081819 in words is "three hundred eighty-four million, eighty-one thousand, eight hundred nineteen".