384021018 has 24 divisors (see below), whose sum is σ = 868222368. Its totient is φ = 122441352.

The previous prime is 384021013. The next prime is 384021023. The reversal of 384021018 is 810120483.

It is an interprime number because it is at equal distance from previous prime (384021013) and next prime (384021023).

It is a junction number, because it is equal to n+sod(n) for n = 384020982 and 384021000.

It is not an unprimeable number, because it can be changed into a prime (384021013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 463380 + ... + 464207.

It is an arithmetic number, because the mean of its divisors is an integer number (36175932).

Almost surely, 2^384021018 is an apocalyptic number.

384021018 is an abundant number, since it is smaller than the sum of its proper divisors (484201350).

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

384021018 is a wasteful number, since it uses less digits than its factorization.

384021018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927618 (or 927615 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 384021018 is about 19596.4542200879. The cubic root of 384021018 is about 726.8614980856.

The spelling of 384021018 in words is "three hundred eighty-four million, twenty-one thousand, eighteen".