198649029 has 8 divisors (see below), whose sum is σ = 280445760. Its totient is φ = 124642496.

The previous prime is 198649021. The next prime is 198649051. The reversal of 198649029 is 920946891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198649029 - 2³ = 198649021 is a prime.

It is a super-2 number, since 2×198649029² = 78922873445285682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198649021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1947489 + ... + 1947590.

It is an arithmetic number, because the mean of its divisors is an integer number (35055720).

Almost surely, 2^198649029 is an apocalyptic number.

It is an amenable number.

198649029 is a deficient number, since it is larger than the sum of its proper divisors (81796731).

198649029 is a wasteful number, since it uses less digits than its factorization.

198649029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3895099.

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 198649029 is about 14094.2906526011. The cubic root of 198649029 is about 583.4838172485.

It can be divided in two parts, 1986 and 49029, that added together give a palindrome (51015).

The spelling of 198649029 in words is "one hundred ninety-eight million, six hundred forty-nine thousand, twenty-nine".