18156242435 has 32 divisors (see below), whose sum is σ = 23471268480. Its totient is φ = 13447323648.

The previous prime is 18156242413. The next prime is 18156242473. The reversal of 18156242435 is 53424265181.

It is a cyclic number.

It is not a de Polignac number, because 18156242435 - 2⁸ = 18156242179 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18156242392 and 18156242401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 810161 + ... + 832269.

It is an arithmetic number, because the mean of its divisors is an integer number (733477140).

Almost surely, 2^18156242435 is an apocalyptic number.

18156242435 is a deficient number, since it is larger than the sum of its proper divisors (5315026045).

18156242435 is a wasteful number, since it uses less digits than its factorization.

18156242435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22367.

The product of its digits is 230400, while the sum is 41.

The spelling of 18156242435 in words is "eighteen billion, one hundred fifty-six million, two hundred forty-two thousand, four hundred thirty-five".