384878011 has 16 divisors (see below), whose sum is σ = 468840960. Its totient is φ = 308419200.

The previous prime is 384877991. The next prime is 384878027. The reversal of 384878011 is 110878483.

It is a cyclic number.

It is not a de Polignac number, because 384878011 - 2⁵ = 384877979 is a prime.

It is a super-2 number, since 2×384878011² = 296262166702632242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (384878311) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7260 + ... + 28678.

It is an arithmetic number, because the mean of its divisors is an integer number (29302560).

Almost surely, 2^384878011 is an apocalyptic number.

384878011 is a deficient number, since it is larger than the sum of its proper divisors (83962949).

384878011 is a wasteful number, since it uses less digits than its factorization.

384878011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21594.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 384878011 is about 19618.3080565068. The cubic root of 384878011 is about 727.4017917918.

The spelling of 384878011 in words is "three hundred eighty-four million, eight hundred seventy-eight thousand, eleven".