498398161 has 4 divisors (see below), whose sum is σ = 501151924. Its totient is φ = 495644400.

The previous prime is 498398149. The next prime is 498398171. The reversal of 498398161 is 161893894.

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 46580625 + 451817536 = 6825^2 + 21256^2 .

It is a cyclic number.

It is not a de Polignac number, because 498398161 - 2¹¹ = 498396113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (498398171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1376610 + ... + 1376971.

It is an arithmetic number, because the mean of its divisors is an integer number (125287981).

Almost surely, 2^498398161 is an apocalyptic number.

It is an amenable number.

498398161 is a deficient number, since it is larger than the sum of its proper divisors (2753763).

498398161 is a wasteful number, since it uses less digits than its factorization.

498398161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2753762.

The product of its digits is 373248, while the sum is 49.

The square root of 498398161 is about 22324.8328325208. The cubic root of 498398161 is about 792.8520322665.

The spelling of 498398161 in words is "four hundred ninety-eight million, three hundred ninety-eight thousand, one hundred sixty-one".