199969146418 has 8 divisors (see below), whose sum is σ = 299955656448. Its totient is φ = 99983927604.

The previous prime is 199969146401. The next prime is 199969146451. The reversal of 199969146418 is 814641969991.

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, 321855 + ... + 709597.

It is an arithmetic number, because the mean of its divisors is an integer number (37494457056).

Almost surely, 2^199969146418 is an apocalyptic number.

199969146418 is a deficient number, since it is larger than the sum of its proper divisors (99986510030).

199969146418 is a wasteful number, since it uses less digits than its factorization.

199969146418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645608.

The product of its digits is 30233088, while the sum is 67.

The spelling of 199969146418 in words is "one hundred ninety-nine billion, nine hundred sixty-nine million, one hundred forty-six thousand, four hundred eighteen".