199434199498 has 8 divisors (see below), whose sum is σ = 309466861380. Its totient is φ = 96278579040.

The previous prime is 199434199403. The next prime is 199434199507. The reversal of 199434199498 is 894991434991.

It can be written as a sum of positive squares in 2 ways, for example, as 198253796049 + 1180403449 = 445257^2 + 34357^2 .

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, 1719260283 + ... + 1719260398.

Almost surely, 2^199434199498 is an apocalyptic number.

199434199498 is a deficient number, since it is larger than the sum of its proper divisors (110032661882).

199434199498 is a wasteful number, since it uses less digits than its factorization.

199434199498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3438520712.

The product of its digits is 90699264, while the sum is 70.

The spelling of 199434199498 in words is "one hundred ninety-nine billion, four hundred thirty-four million, one hundred ninety-nine thousand, four hundred ninety-eight".