18435154044 has 12 divisors (see below), whose sum is σ = 43015359464. Its totient is φ = 6145051344.

The previous prime is 18435154037. The next prime is 18435154081. The reversal of 18435154044 is 44045153481.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 18435153993 and 18435154011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 768131407 + ... + 768131430.

Almost surely, 2^18435154044 is an apocalyptic number.

It is an amenable number.

18435154044 is an abundant number, since it is smaller than the sum of its proper divisors (24580205420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18435154044 is a wasteful number, since it uses less digits than its factorization.

18435154044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536262844 (or 1536262842 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 39.

It can be divided in two parts, 184351 and 54044, that added together give a triangular number (238395 = T₆₉₀).

The spelling of 18435154044 in words is "eighteen billion, four hundred thirty-five million, one hundred fifty-four thousand, forty-four".