18061538835 has 16 divisors (see below), whose sum is σ = 29830671360. Its totient is φ = 9322084320.

The previous prime is 18061538827. The next prime is 18061538839. The reversal of 18061538835 is 53883516081.

It is not a de Polignac number, because 18061538835 - 2³ = 18061538827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18061538839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19420545 + ... + 19421474.

It is an arithmetic number, because the mean of its divisors is an integer number (1864416960).

Almost surely, 2^18061538835 is an apocalyptic number.

18061538835 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18061538835 is a deficient number, since it is larger than the sum of its proper divisors (11769132525).

18061538835 is a wasteful number, since it uses less digits than its factorization.

18061538835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38842058.

The product of its (nonzero) digits is 691200, while the sum is 48.

The spelling of 18061538835 in words is "eighteen billion, sixty-one million, five hundred thirty-eight thousand, eight hundred thirty-five".