384618755 has 4 divisors (see below), whose sum is σ = 461542512. Its totient is φ = 307695000.

The previous prime is 384618739. The next prime is 384618769. The reversal of 384618755 is 557816483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 557816483 = 7 ⋅79688069.

It is not a de Polignac number, because 384618755 - 2⁴ = 384618739 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38461871 + ... + 38461880.

It is an arithmetic number, because the mean of its divisors is an integer number (115385628).

Almost surely, 2^384618755 is an apocalyptic number.

384618755 is a deficient number, since it is larger than the sum of its proper divisors (76923757).

384618755 is an equidigital number, since it uses as much as digits as its factorization.

384618755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76923756.

The product of its digits is 806400, while the sum is 47.

The square root of 384618755 is about 19611.6994419148. The cubic root of 384618755 is about 727.2384277882.

The spelling of 384618755 in words is "three hundred eighty-four million, six hundred eighteen thousand, seven hundred fifty-five".