198161375 has 8 divisors (see below), whose sum is σ = 247305552. Its totient is φ = 158529000.

The previous prime is 198161363. The next prime is 198161387. The reversal of 198161375 is 573161891.

It is an interprime number because it is at equal distance from previous prime (198161363) and next prime (198161387).

It is not a de Polignac number, because 198161375 - 2¹² = 198157279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 792521 + ... + 792770.

It is an arithmetic number, because the mean of its divisors is an integer number (30913194).

Almost surely, 2^198161375 is an apocalyptic number.

198161375 is a deficient number, since it is larger than the sum of its proper divisors (49144177).

198161375 is an equidigital number, since it uses as much as digits as its factorization.

198161375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585306 (or 1585296 counting only the distinct ones).

The product of its digits is 45360, while the sum is 41.

The square root of 198161375 is about 14076.9803224981. The cubic root of 198161375 is about 583.0059705155.

The spelling of 198161375 in words is "one hundred ninety-eight million, one hundred sixty-one thousand, three hundred seventy-five".