918434420500 has 48 divisors (see below), whose sum is σ = 2009210112000. Its totient is φ = 366760336800.

The previous prime is 918434420483. The next prime is 918434420507. The reversal of 918434420500 is 5024434819.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918434420507) 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, 1233780 + ... + 1832779.

It is an arithmetic number, because the mean of its divisors is an integer number (41858544000).

Almost surely, 2^918434420500 is an apocalyptic number.

It is an amenable number.

918434420500 is an abundant number, since it is smaller than the sum of its proper divisors (1090775691500).

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

918434420500 is a wasteful number, since it uses less digits than its factorization.

918434420500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3067177 (or 3067165 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 918434420500 in words is "nine hundred eighteen billion, four hundred thirty-four million, four hundred twenty thousand, five hundred".