198461445 has 64 divisors (see below), whose sum is σ = 392878080. Its totient is φ = 83305728.

The previous prime is 198461429. The next prime is 198461447. The reversal of 198461445 is 544164891.

It is not a de Polignac number, because 198461445 - 2⁴ = 198461429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198461397 and 198461406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198461447) 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 63 ways as a sum of consecutive naturals, for example, 473446 + ... + 473864.

It is an arithmetic number, because the mean of its divisors is an integer number (6138720).

Almost surely, 2^198461445 is an apocalyptic number.

198461445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

198461445 is a deficient number, since it is larger than the sum of its proper divisors (194416635).

198461445 is a wasteful number, since it uses less digits than its factorization.

198461445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794.

The product of its digits is 138240, while the sum is 42.

The square root of 198461445 is about 14087.6344714079. The cubic root of 198461445 is about 583.3000984240.

The spelling of 198461445 in words is "one hundred ninety-eight million, four hundred sixty-one thousand, four hundred forty-five".