198406967807 has 4 divisors (see below), whose sum is σ = 198701778240. Its totient is φ = 198112157376.

The previous prime is 198406967783. The next prime is 198406967827. The reversal of 198406967807 is 708769604891.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 198406967807 - 2¹⁰ = 198406966783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198406967827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147404207 + ... + 147405552.

It is an arithmetic number, because the mean of its divisors is an integer number (49675444560).

Almost surely, 2^198406967807 is an apocalyptic number.

198406967807 is a deficient number, since it is larger than the sum of its proper divisors (294810433).

198406967807 is an equidigital number, since it uses as much as digits as its factorization.

198406967807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294810432.

The product of its (nonzero) digits is 36578304, while the sum is 65.

The spelling of 198406967807 in words is "one hundred ninety-eight billion, four hundred six million, nine hundred sixty-seven thousand, eight hundred seven".