18145737858 has 8 divisors (see below), whose sum is σ = 36291475728. Its totient is φ = 6048579284.

The previous prime is 18145737809. The next prime is 18145737881. The reversal of 18145737858 is 85873754181.

It is a happy number.

18145737858 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

18145737858 is an admirable number.

It is a super-2 number, since 2×18145737858² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18145737798 and 18145737807.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1512144816 + ... + 1512144827.

It is an arithmetic number, because the mean of its divisors is an integer number (4536434466).

Almost surely, 2^18145737858 is an apocalyptic number.

18145737858 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18145737858 is a wasteful number, since it uses less digits than its factorization.

18145737858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3024289648.

The product of its digits is 7526400, while the sum is 57.

The spelling of 18145737858 in words is "eighteen billion, one hundred forty-five million, seven hundred thirty-seven thousand, eight hundred fifty-eight".