198988539315 has 16 divisors (see below), whose sum is σ = 337109996448. Its totient is φ = 99884443136.

The previous prime is 198988539311. The next prime is 198988539389. The reversal of 198988539315 is 513935889891.

It is a cyclic number.

It is not a de Polignac number, because 198988539315 - 2² = 198988539311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198988539315.

It is not an unprimeable number, because it can be changed into a prime (198988539311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 390173352 + ... + 390173861.

It is an arithmetic number, because the mean of its divisors is an integer number (21069374778).

Almost surely, 2^198988539315 is an apocalyptic number.

198988539315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

198988539315 is a deficient number, since it is larger than the sum of its proper divisors (138121457133).

198988539315 is a wasteful number, since it uses less digits than its factorization.

198988539315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780347238.

The product of its digits is 83980800, while the sum is 69.

The spelling of 198988539315 in words is "one hundred ninety-eight billion, nine hundred eighty-eight million, five hundred thirty-nine thousand, three hundred fifteen".