18451257148 has 12 divisors (see below), whose sum is σ = 32836983480. Its totient is φ = 9069261872.

The previous prime is 18451257109. The next prime is 18451257151. The reversal of 18451257148 is 84175215481.

It is a super-3 number, since 3×18451257148³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18451257098 and 18451257107.

It is a congruent number.

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, 39091411 + ... + 39091882.

It is an arithmetic number, because the mean of its divisors is an integer number (2736415290).

Almost surely, 2^18451257148 is an apocalyptic number.

It is an amenable number.

18451257148 is a deficient number, since it is larger than the sum of its proper divisors (14385726332).

18451257148 is a wasteful number, since it uses less digits than its factorization.

18451257148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78183356 (or 78183354 counting only the distinct ones).

The product of its digits is 358400, while the sum is 46.

The spelling of 18451257148 in words is "eighteen billion, four hundred fifty-one million, two hundred fifty-seven thousand, one hundred forty-eight".