18835169011 has 4 divisors (see below), whose sum is σ = 18836139472. Its totient is φ = 18834198552.

The previous prime is 18835168997. The next prime is 18835169083. The reversal of 18835169011 is 11096153881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11096153881 = 19 ⋅584008099.

It is a cyclic number.

It is not a de Polignac number, because 18835169011 - 2¹³ = 18835160819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18835169411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455511 + ... + 495136.

It is an arithmetic number, because the mean of its divisors is an integer number (4709034868).

Almost surely, 2^18835169011 is an apocalyptic number.

18835169011 is a deficient number, since it is larger than the sum of its proper divisors (970461).

18835169011 is an equidigital number, since it uses as much as digits as its factorization.

18835169011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970460.

The product of its (nonzero) digits is 51840, while the sum is 43.

The spelling of 18835169011 in words is "eighteen billion, eight hundred thirty-five million, one hundred sixty-nine thousand, eleven".