162423423418 has 4 divisors (see below), whose sum is σ = 243635135130. Its totient is φ = 81211711708.

The previous prime is 162423423373. The next prime is 162423423473. The reversal of 162423423418 is 814324324261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 814324324261 = 7 ⋅116332046323.

It can be written as a sum of positive squares in only one way, i.e., 162056968969 + 366454449 = 402563^2 + 19143^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 as a sum of consecutive naturals, namely, 40605855853 + ... + 40605855856.

Almost surely, 2^162423423418 is an apocalyptic number.

162423423418 is a deficient number, since it is larger than the sum of its proper divisors (81211711712).

162423423418 is an equidigital number, since it uses as much as digits as its factorization.

162423423418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81211711711.

The product of its digits is 221184, while the sum is 40.

Adding to 162423423418 its reverse (814324324261), we get a palindrome (976747747679).

The spelling of 162423423418 in words is "one hundred sixty-two billion, four hundred twenty-three million, four hundred twenty-three thousand, four hundred eighteen".