18370351408 has 40 divisors (see below), whose sum is σ = 36567994320. Its totient is φ = 8933633280.

The previous prime is 18370351393. The next prime is 18370351409. The reversal of 18370351408 is 80415307381.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18370351409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2613723 + ... + 2620741.

It is an arithmetic number, because the mean of its divisors is an integer number (914199858).

Almost surely, 2^18370351408 is an apocalyptic number.

It is an amenable number.

18370351408 is a deficient number, since it is larger than the sum of its proper divisors (18197642912).

18370351408 is a wasteful number, since it uses less digits than its factorization.

18370351408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11485 (or 11479 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

Adding to 18370351408 its reverse (80415307381), we get a palindrome (98785658789).

The spelling of 18370351408 in words is "eighteen billion, three hundred seventy million, three hundred fifty-one thousand, four hundred eight".