1679171698 has 4 divisors (see below), whose sum is σ = 2518757550. Its totient is φ = 839585848.

The previous prime is 1679171693. The next prime is 1679171723. The reversal of 1679171698 is 8961719761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8961719761 = 1433 ⋅6253817.

It can be written as a sum of positive squares in only one way, i.e., 1242069049 + 437102649 = 35243^2 + 20907^2 .

It is not an unprimeable number, because it can be changed into a prime (1679171693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419792923 + ... + 419792926.

Almost surely, 2^1679171698 is an apocalyptic number.

1679171698 is a deficient number, since it is larger than the sum of its proper divisors (839585852).

1679171698 is an equidigital number, since it uses as much as digits as its factorization.

1679171698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839585851.

The product of its digits is 1143072, while the sum is 55.

The square root of 1679171698 is about 40977.6975683115. The cubic root of 1679171698 is about 1188.5889869099.

The spelling of 1679171698 in words is "one billion, six hundred seventy-nine million, one hundred seventy-one thousand, six hundred ninety-eight".