209369419018 has 8 divisors (see below), whose sum is σ = 317103198048. Its totient is φ = 103668353004.

The previous prime is 209369419003. The next prime is 209369419027. The reversal of 209369419018 is 810914963902.

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

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, 508177996 + ... + 508178407.

It is an arithmetic number, because the mean of its divisors is an integer number (39637899756).

Almost surely, 2^209369419018 is an apocalyptic number.

209369419018 is a deficient number, since it is larger than the sum of its proper divisors (107733779030).

209369419018 is a wasteful number, since it uses less digits than its factorization.

209369419018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016356508.

The product of its (nonzero) digits is 839808, while the sum is 52.

The spelling of 209369419018 in words is "two hundred nine billion, three hundred sixty-nine million, four hundred nineteen thousand, eighteen".