198031629 has 4 divisors (see below), whose sum is σ = 264042176. Its totient is φ = 132021084.

The previous prime is 198031601. The next prime is 198031637. The reversal of 198031629 is 926130891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 198031629 - 2⁵ = 198031597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198031649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33005269 + ... + 33005274.

It is an arithmetic number, because the mean of its divisors is an integer number (66010544).

Almost surely, 2^198031629 is an apocalyptic number.

It is an amenable number.

198031629 is a deficient number, since it is larger than the sum of its proper divisors (66010547).

198031629 is an equidigital number, since it uses as much as digits as its factorization.

198031629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66010546.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 198031629 is about 14072.3711221670. The cubic root of 198031629 is about 582.8787018392.

The spelling of 198031629 in words is "one hundred ninety-eight million, thirty-one thousand, six hundred twenty-nine".