1868388422 has 8 divisors (see below), whose sum is σ = 2814929496. Its totient is φ = 930078592.

The previous prime is 1868388419. The next prime is 1868388433. The reversal of 1868388422 is 2248838681.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 2057243 + ... + 2058150.

It is an arithmetic number, because the mean of its divisors is an integer number (351866187).

Almost surely, 2^1868388422 is an apocalyptic number.

1868388422 is a deficient number, since it is larger than the sum of its proper divisors (946541074).

1868388422 is a wasteful number, since it uses less digits than its factorization.

1868388422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4115622.

The product of its digits is 1179648, while the sum is 50.

The square root of 1868388422 is about 43224.8588430315. The cubic root of 1868388422 is about 1231.6549476951.

It can be divided in two parts, 186 and 8388422, that added together give a 23-rd power (8388608 = 2²³).

The spelling of 1868388422 in words is "one billion, eight hundred sixty-eight million, three hundred eighty-eight thousand, four hundred twenty-two".