384668738 has 4 divisors (see below), whose sum is σ = 577003110. Its totient is φ = 192334368.

The previous prime is 384668693. The next prime is 384668749. The reversal of 384668738 is 837866483.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 267747769 + 116920969 = 16363^2 + 10813^2 .

It is a super-3 number, since 3×384668738³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 384668738.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96167183 + ... + 96167186.

Almost surely, 2^384668738 is an apocalyptic number.

384668738 is a deficient number, since it is larger than the sum of its proper divisors (192334372).

384668738 is a wasteful number, since it uses less digits than its factorization.

384668738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192334371.

The product of its digits is 4644864, while the sum is 53.

The square root of 384668738 is about 19612.9737163950. The cubic root of 384668738 is about 727.2699290981.

The spelling of 384668738 in words is "three hundred eighty-four million, six hundred sixty-eight thousand, seven hundred thirty-eight".