1868388423 has 16 divisors (see below), whose sum is σ = 2811369600. Its totient is φ = 1093309280.

The previous prime is 1868388419. The next prime is 1868388433. The reversal of 1868388423 is 3248838681.

It is a happy number.

It is not a de Polignac number, because 1868388423 - 2² = 1868388419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868388433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 975213 + ... + 977126.

It is an arithmetic number, because the mean of its divisors is an integer number (175710600).

Almost surely, 2^1868388423 is an apocalyptic number.

1868388423 is a deficient number, since it is larger than the sum of its proper divisors (942981177).

1868388423 is a wasteful number, since it uses less digits than its factorization.

1868388423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952382.

The product of its digits is 1769472, while the sum is 51.

The square root of 1868388423 is about 43224.8588545989. The cubic root of 1868388423 is about 1231.6549479149.

The spelling of 1868388423 in words is "one billion, eight hundred sixty-eight million, three hundred eighty-eight thousand, four hundred twenty-three".