17979530834 has 4 divisors (see below), whose sum is σ = 26969296254. Its totient is φ = 8989765416.

The previous prime is 17979530831. The next prime is 17979530861. The reversal of 17979530834 is 43803597971.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10857014809 + 7122516025 = 104197^2 + 84395^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 17979530834.

It is not an unprimeable number, because it can be changed into a prime (17979530831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4494882707 + ... + 4494882710.

Almost surely, 2^17979530834 is an apocalyptic number.

17979530834 is a deficient number, since it is larger than the sum of its proper divisors (8989765420).

17979530834 is an equidigital number, since it uses as much as digits as its factorization.

17979530834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8989765419.

The product of its (nonzero) digits is 5715360, while the sum is 56.

The spelling of 17979530834 in words is "seventeen billion, nine hundred seventy-nine million, five hundred thirty thousand, eight hundred thirty-four".