1377463609 has 2 divisors, whose sum is σ = 1377463610. Its totient is φ = 1377463608.

The previous prime is 1377463589. The next prime is 1377463627. The reversal of 1377463609 is 9063647731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1345789225 + 31674384 = 36685^2 + 5628^2 .

It is a cyclic number.

It is not a de Polignac number, because 1377463609 - 2¹⁵ = 1377430841 is a prime.

It is not a weakly prime, because it can be changed into another prime (1377463649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688731804 + 688731805.

It is an arithmetic number, because the mean of its divisors is an integer number (688731805).

Almost surely, 2^1377463609 is an apocalyptic number.

It is an amenable number.

1377463609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377463609 is an equidigital number, since it uses as much as digits as its factorization.

1377463609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 46.

The square root of 1377463609 is about 37114.1968658895. The cubic root of 1377463609 is about 1112.6537723562.

The spelling of 1377463609 in words is "one billion, three hundred seventy-seven million, four hundred sixty-three thousand, six hundred nine".