18514144745 has 32 divisors (see below), whose sum is σ = 23464857600. Its totient is φ = 13996111360.

The previous prime is 18514144741. The next prime is 18514144769. The reversal of 18514144745 is 54744141581.

It is a happy number.

It is not a de Polignac number, because 18514144745 - 2² = 18514144741 is a prime.

It is a super-2 number, since 2×18514144745² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18514144696 and 18514144705.

It is not an unprimeable number, because it can be changed into a prime (18514144741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3269957 + ... + 3275613.

It is an arithmetic number, because the mean of its divisors is an integer number (733276800).

Almost surely, 2^18514144745 is an apocalyptic number.

It is an amenable number.

18514144745 is a deficient number, since it is larger than the sum of its proper divisors (4950712855).

18514144745 is a wasteful number, since it uses less digits than its factorization.

18514144745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6025.

The product of its digits is 358400, while the sum is 44.

The spelling of 18514144745 in words is "eighteen billion, five hundred fourteen million, one hundred forty-four thousand, seven hundred forty-five".