17939209282 has 4 divisors (see below), whose sum is σ = 26908813926. Its totient is φ = 8969604640.

The previous prime is 17939209229. The next prime is 17939209297. The reversal of 17939209282 is 28290293971.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28290293971 = 61 ⋅463775311.

It can be written as a sum of positive squares in only one way, i.e., 9763613721 + 8175595561 = 98811^2 + 90419^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4484802319 + ... + 4484802322.

Almost surely, 2^17939209282 is an apocalyptic number.

17939209282 is a deficient number, since it is larger than the sum of its proper divisors (8969604644).

17939209282 is an equidigital number, since it uses as much as digits as its factorization.

17939209282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8969604643.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 17939209282 in words is "seventeen billion, nine hundred thirty-nine million, two hundred nine thousand, two hundred eighty-two".