198246451 has 4 divisors (see below), whose sum is σ = 213496192. Its totient is φ = 182996712.

The previous prime is 198246443. The next prime is 198246463. The reversal of 198246451 is 154642891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154642891 = 13 ⋅11895607.

It is a cyclic number.

It is not a de Polignac number, because 198246451 - 2³ = 198246443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198246751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7624851 + ... + 7624876.

It is an arithmetic number, because the mean of its divisors is an integer number (53374048).

Almost surely, 2^198246451 is an apocalyptic number.

198246451 is a deficient number, since it is larger than the sum of its proper divisors (15249741).

198246451 is a wasteful number, since it uses less digits than its factorization.

198246451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15249740.

The product of its digits is 69120, while the sum is 40.

The square root of 198246451 is about 14080.0018110794. The cubic root of 198246451 is about 583.0893919517.

The spelling of 198246451 in words is "one hundred ninety-eight million, two hundred forty-six thousand, four hundred fifty-one".