18105135658 has 16 divisors (see below), whose sum is σ = 27468045000. Its totient is φ = 8949491712.

The previous prime is 18105135617. The next prime is 18105135709. The reversal of 18105135658 is 85653150181.

It can be written as a sum of positive squares in 4 ways, for example, as 17821449009 + 283686649 = 133497^2 + 16843^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5398 + ... + 190366.

Almost surely, 2^18105135658 is an apocalyptic number.

18105135658 is a deficient number, since it is larger than the sum of its proper divisors (9362909342).

18105135658 is a wasteful number, since it uses less digits than its factorization.

18105135658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185529.

The product of its (nonzero) digits is 144000, while the sum is 43.

The spelling of 18105135658 in words is "eighteen billion, one hundred five million, one hundred thirty-five thousand, six hundred fifty-eight".