199316457 has 20 divisors (see below), whose sum is σ = 305011476. Its totient is φ = 129634560.

The previous prime is 199316431. The next prime is 199316461. The reversal of 199316457 is 754613991.

199316457 is a `hidden beast` number, since 199 + 3 + 1 + 6 + 457 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 85766121 + 113550336 = 9261^2 + 10656^2 .

It is not a de Polignac number, because 199316457 - 2¹⁰ = 199315433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199316477) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26688 + ... + 33329.

Almost surely, 2^199316457 is an apocalyptic number.

It is an amenable number.

199316457 is a deficient number, since it is larger than the sum of its proper divisors (105695019).

199316457 is an equidigital number, since it uses as much as digits as its factorization.

199316457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60070 (or 60061 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 199316457 is about 14117.9480449533. The cubic root of 199316457 is about 584.1365565837.

The spelling of 199316457 in words is "one hundred ninety-nine million, three hundred sixteen thousand, four hundred fifty-seven".