384851690 has 16 divisors (see below), whose sum is σ = 704475360. Its totient is φ = 151331280.

The previous prime is 384851683. The next prime is 384851717. The reversal of 384851690 is 96158483.

It is a super-2 number, since 2×384851690² = 296221646591712200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 325556 + ... + 326735.

It is an arithmetic number, because the mean of its divisors is an integer number (44029710).

Almost surely, 2^384851690 is an apocalyptic number.

384851690 is a deficient number, since it is larger than the sum of its proper divisors (319623670).

384851690 is a wasteful number, since it uses less digits than its factorization.

384851690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652357.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 384851690 is about 19617.6372175652. The cubic root of 384851690 is about 727.3852095861.

The spelling of 384851690 in words is "three hundred eighty-four million, eight hundred fifty-one thousand, six hundred ninety".