1346579789 has 2 divisors, whose sum is σ = 1346579790. Its totient is φ = 1346579788.

The previous prime is 1346579783. The next prime is 1346579831. The reversal of 1346579789 is 9879756431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1189077289 + 157502500 = 34483^2 + 12550^2 .

It is a cyclic number.

It is not a de Polignac number, because 1346579789 - 2¹² = 1346575693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1346579783) 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, 673289894 + 673289895.

It is an arithmetic number, because the mean of its divisors is an integer number (673289895).

Almost surely, 2^1346579789 is an apocalyptic number.

It is an amenable number.

1346579789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1346579789 is an equidigital number, since it uses as much as digits as its factorization.

1346579789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11430720, while the sum is 59.

The square root of 1346579789 is about 36695.7734487229. The cubic root of 1346579789 is about 1104.2753147140.

The spelling of 1346579789 in words is "one billion, three hundred forty-six million, five hundred seventy-nine thousand, seven hundred eighty-nine".