384195816 has 24 divisors (see below), whose sum is σ = 1040530530. Its totient is φ = 128065248.

The previous prime is 384195809. The next prime is 384195817. The reversal of 384195816 is 618591483.

384195816 is a `hidden beast` number, since 384 + 195 + 81 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 383768100 + 427716 = 19590^2 + 654^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (384195817) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2667955 + ... + 2668098.

Almost surely, 2^384195816 is an apocalyptic number.

384195816 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

384195816 is an abundant number, since it is smaller than the sum of its proper divisors (656334714).

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

384195816 is a wasteful number, since it uses less digits than its factorization.

384195816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5336065 (or 5336058 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 384195816 is about 19600.9136521745. The cubic root of 384195816 is about 726.9717651957.

The spelling of 384195816 in words is "three hundred eighty-four million, one hundred ninety-five thousand, eight hundred sixteen".