198261555459 has 8 divisors (see below), whose sum is σ = 288380444352. Its totient is φ = 120158518440.

The previous prime is 198261555451. The next prime is 198261555533. The reversal of 198261555459 is 954555162891.

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

It is not a de Polignac number, because 198261555459 - 2³ = 198261555451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198261555451) 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, 3003962929 + ... + 3003962994.

It is an arithmetic number, because the mean of its divisors is an integer number (36047555544).

Almost surely, 2^198261555459 is an apocalyptic number.

198261555459 is a deficient number, since it is larger than the sum of its proper divisors (90118888893).

198261555459 is a wasteful number, since it uses less digits than its factorization.

198261555459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6007925937.

The product of its digits is 19440000, while the sum is 60.

The spelling of 198261555459 in words is "one hundred ninety-eight billion, two hundred sixty-one million, five hundred fifty-five thousand, four hundred fifty-nine".