198313157834 has 16 divisors (see below), whose sum is σ = 324535575456. Its totient is φ = 90135918000.

The previous prime is 198313157803. The next prime is 198313157839. The reversal of 198313157834 is 438751313891.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (198313157839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1484 + ... + 629784.

It is an arithmetic number, because the mean of its divisors is an integer number (20283473466).

Almost surely, 2^198313157834 is an apocalyptic number.

198313157834 is a deficient number, since it is larger than the sum of its proper divisors (126222417622).

198313157834 is a wasteful number, since it uses less digits than its factorization.

198313157834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642661.

The product of its digits is 2177280, while the sum is 53.

The spelling of 198313157834 in words is "one hundred ninety-eight billion, three hundred thirteen million, one hundred fifty-seven thousand, eight hundred thirty-four".