198069953 has 4 divisors (see below), whose sum is σ = 198715440. Its totient is φ = 197424468.

The previous prime is 198069931. The next prime is 198069961. The reversal of 198069953 is 359960891.

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, and also an emirpimes, since its reverse is a distinct semiprime: 359960891 = 631 ⋅570461.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198069953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198069253) 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, 322283 + ... + 322896.

It is an arithmetic number, because the mean of its divisors is an integer number (49678860).

Almost surely, 2^198069953 is an apocalyptic number.

It is an amenable number.

198069953 is a deficient number, since it is larger than the sum of its proper divisors (645487).

198069953 is an equidigital number, since it uses as much as digits as its factorization.

198069953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645486.

The product of its (nonzero) digits is 524880, while the sum is 50.

The square root of 198069953 is about 14073.7327315819. The cubic root of 198069953 is about 582.9162998779.

The spelling of 198069953 in words is "one hundred ninety-eight million, sixty-nine thousand, nine hundred fifty-three".