198534953 has 4 divisors (see below), whose sum is σ = 198836880. Its totient is φ = 198233028.

The previous prime is 198534949. The next prime is 198534977. The reversal of 198534953 is 359435891.

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: 359435891 = 12041 ⋅29851.

It is a cyclic number.

It is not a de Polignac number, because 198534953 - 2² = 198534949 is a prime.

It is a super-2 number, since 2×198534953² = 78832255125424418, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 198534898 and 198534907.

It is not an unprimeable number, because it can be changed into a prime (198534983) 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, 149975 + ... + 151292.

It is an arithmetic number, because the mean of its divisors is an integer number (49709220).

Almost surely, 2^198534953 is an apocalyptic number.

It is an amenable number.

198534953 is a deficient number, since it is larger than the sum of its proper divisors (301927).

198534953 is an equidigital number, since it uses as much as digits as its factorization.

198534953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301926.

The product of its digits is 583200, while the sum is 47.

The square root of 198534953 is about 14090.2431845586. The cubic root of 198534953 is about 583.3721055771.

The spelling of 198534953 in words is "one hundred ninety-eight million, five hundred thirty-four thousand, nine hundred fifty-three".