1679205461 has 2 divisors, whose sum is σ = 1679205462. Its totient is φ = 1679205460.

The previous prime is 1679205391. The next prime is 1679205469. The reversal of 1679205461 is 1645029761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1349092900 + 330112561 = 36730^2 + 18169^2 .

It is a cyclic number.

It is not a de Polignac number, because 1679205461 - 2²² = 1675011157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1679205469) by changing a digit.

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, 839602730 + 839602731.

It is an arithmetic number, because the mean of its divisors is an integer number (839602731).

Almost surely, 2^1679205461 is an apocalyptic number.

It is an amenable number.

1679205461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1679205461 is an equidigital number, since it uses as much as digits as its factorization.

1679205461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 1679205461 is about 40978.1095342379. The cubic root of 1679205461 is about 1188.5969531513.

The spelling of 1679205461 in words is "one billion, six hundred seventy-nine million, two hundred five thousand, four hundred sixty-one".