198611427 has 16 divisors (see below), whose sum is σ = 318575360. Its totient is φ = 107518752.

The previous prime is 198611411. The next prime is 198611431. The reversal of 198611427 is 724116891.

It is not a de Polignac number, because 198611427 - 2⁴ = 198611411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198611827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248488 + ... + 249285.

It is an arithmetic number, because the mean of its divisors is an integer number (19910960).

Almost surely, 2^198611427 is an apocalyptic number.

198611427 is a deficient number, since it is larger than the sum of its proper divisors (119963933).

198611427 is a wasteful number, since it uses less digits than its factorization.

198611427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497802.

The product of its digits is 24192, while the sum is 39.

The square root of 198611427 is about 14092.9566450763. The cubic root of 198611427 is about 583.4469993104.

The spelling of 198611427 in words is "one hundred ninety-eight million, six hundred eleven thousand, four hundred twenty-seven".