243289391892 has 24 divisors (see below), whose sum is σ = 568050985152. Its totient is φ = 81042787200.

The previous prime is 243289391879. The next prime is 243289391921. The reversal of 243289391892 is 298193982342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6690709 + ... + 6726972.

It is an arithmetic number, because the mean of its divisors is an integer number (23668791048).

Almost surely, 2^243289391892 is an apocalyptic number.

It is an amenable number.

243289391892 is an abundant number, since it is smaller than the sum of its proper divisors (324761593260).

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

243289391892 is a wasteful number, since it uses less digits than its factorization.

243289391892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13419199 (or 13419197 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 60.

The spelling of 243289391892 in words is "two hundred forty-three billion, two hundred eighty-nine million, three hundred ninety-one thousand, eight hundred ninety-two".