198148761 has 20 divisors (see below), whose sum is σ = 297247632. Its totient is φ = 132086052.

The previous prime is 198148759. The next prime is 198148763. The reversal of 198148761 is 167841891.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (198148759) and next prime (198148763).

It is not a de Polignac number, because 198148761 - 2¹ = 198148759 is a prime.

It is a super-3 number, since 3×198148761³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (198148763) 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, 14650 + ... + 24716.

Almost surely, 2^198148761 is an apocalyptic number.

It is an amenable number.

198148761 is a deficient number, since it is larger than the sum of its proper divisors (99098871).

198148761 is an frugal number, since it uses more digits than its factorization.

198148761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10094 (or 10070 counting only the distinct ones).

The product of its digits is 96768, while the sum is 45.

The square root of 198148761 is about 14076.5322789386. The cubic root of 198148761 is about 582.9935998011.

The spelling of 198148761 in words is "one hundred ninety-eight million, one hundred forty-eight thousand, seven hundred sixty-one".