18145708605 has 24 divisors (see below), whose sum is σ = 33107961120. Its totient is φ = 9168357600.

The previous prime is 18145708601. The next prime is 18145708657. The reversal of 18145708605 is 50680754181.

18145708605 is a `hidden beast` number, since 1 + 8 + 14 + 570 + 8 + 60 + 5 = 666.

It is not a de Polignac number, because 18145708605 - 2² = 18145708601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18145708601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10610671 + ... + 10612380.

It is an arithmetic number, because the mean of its divisors is an integer number (1379498380).

Almost surely, 2^18145708605 is an apocalyptic number.

18145708605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18145708605 is a deficient number, since it is larger than the sum of its proper divisors (14962252515).

18145708605 is a wasteful number, since it uses less digits than its factorization.

18145708605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21223081 (or 21223078 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 45.

The spelling of 18145708605 in words is "eighteen billion, one hundred forty-five million, seven hundred eight thousand, six hundred five".