1679859631 has 2 divisors, whose sum is σ = 1679859632. Its totient is φ = 1679859630.

The previous prime is 1679859617. The next prime is 1679859679. The reversal of 1679859631 is 1369589761.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1679859631 - 2¹⁷ = 1679728559 is a prime.

It is a super-2 number, since 2×1679859631² = 5643856759726912322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1679859611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 839929815 + 839929816.

It is an arithmetic number, because the mean of its divisors is an integer number (839929816).

Almost surely, 2^1679859631 is an apocalyptic number.

1679859631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1679859631 is an equidigital number, since it uses as much as digits as its factorization.

1679859631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 55.

The square root of 1679859631 is about 40986.0907016027. The cubic root of 1679859631 is about 1188.7512808058.

The spelling of 1679859631 in words is "one billion, six hundred seventy-nine million, eight hundred fifty-nine thousand, six hundred thirty-one".