920018291920 has 80 divisors (see below), whose sum is σ = 2632667748480. Its totient is φ = 291170621952.

The previous prime is 920018291893. The next prime is 920018291921. The reversal of 920018291920 is 29192810029.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920018291921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63180790 + ... + 63195349.

It is an arithmetic number, because the mean of its divisors is an integer number (32908346856).

Almost surely, 2^920018291920 is an apocalyptic number.

It is an amenable number.

920018291920 is an abundant number, since it is smaller than the sum of its proper divisors (1712649456560).

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

920018291920 is a wasteful number, since it uses less digits than its factorization.

920018291920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126376172 (or 126376166 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 43.

The spelling of 920018291920 in words is "nine hundred twenty billion, eighteen million, two hundred ninety-one thousand, nine hundred twenty".