498001643197 has 4 divisors (see below), whose sum is σ = 498003428860. Its totient is φ = 497999857536.

The previous prime is 498001643189. The next prime is 498001643201. The reversal of 498001643197 is 791346100894.

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

It can be written as a sum of positive squares in 2 ways, for example, as 303255070596 + 194746572601 = 550686^2 + 441301^2 .

It is a cyclic number.

It is not a de Polignac number, because 498001643197 - 2³ = 498001643189 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 (498001643107) 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, 373998 + ... + 1065775.

It is an arithmetic number, because the mean of its divisors is an integer number (124500857215).

Almost surely, 2^498001643197 is an apocalyptic number.

It is an amenable number.

498001643197 is a deficient number, since it is larger than the sum of its proper divisors (1785663).

498001643197 is a wasteful number, since it uses less digits than its factorization.

498001643197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785662.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 498001643197 in words is "four hundred ninety-eight billion, one million, six hundred forty-three thousand, one hundred ninety-seven".