1305449077 has 2 divisors, whose sum is σ = 1305449078. Its totient is φ = 1305449076.

The previous prime is 1305449027. The next prime is 1305449081. The reversal of 1305449077 is 7709445031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1305087876 + 361201 = 36126^2 + 601^2 .

It is a cyclic number.

It is not a de Polignac number, because 1305449077 - 2²³ = 1297060469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1305449027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652724538 + 652724539.

It is an arithmetic number, because the mean of its divisors is an integer number (652724539).

Almost surely, 2^1305449077 is an apocalyptic number.

It is an amenable number.

1305449077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305449077 is an equidigital number, since it uses as much as digits as its factorization.

1305449077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 1305449077 is about 36130.9988375633. The cubic root of 1305449077 is about 1092.9156507256.

The spelling of 1305449077 in words is "one billion, three hundred five million, four hundred forty-nine thousand, seventy-seven".