243841902 has 8 divisors (see below), whose sum is σ = 487683816. Its totient is φ = 81280632.

The previous prime is 243841879. The next prime is 243841907. The reversal of 243841902 is 209148342.

It is a sphenic number, since it is the product of 3 distinct primes.

243841902 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243841907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20320153 + ... + 20320164.

It is an arithmetic number, because the mean of its divisors is an integer number (60960477).

Almost surely, 2^243841902 is an apocalyptic number.

243841902 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

243841902 is a wasteful number, since it uses less digits than its factorization.

243841902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40640322.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 243841902 is about 15615.4379381431. The cubic root of 243841902 is about 624.7449856691.

The spelling of 243841902 in words is "two hundred forty-three million, eight hundred forty-one thousand, nine hundred two".