1305377445 has 16 divisors (see below), whose sum is σ = 2137177152. Its totient is φ = 680010240.

The previous prime is 1305377441. The next prime is 1305377473. The reversal of 1305377445 is 5447735031.

It is not a de Polignac number, because 1305377445 - 2² = 1305377441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305377441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1011276 + ... + 1012565.

It is an arithmetic number, because the mean of its divisors is an integer number (133573572).

Almost surely, 2^1305377445 is an apocalyptic number.

1305377445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1305377445 is a deficient number, since it is larger than the sum of its proper divisors (831799707).

1305377445 is a wasteful number, since it uses less digits than its factorization.

1305377445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023892.

The product of its (nonzero) digits is 176400, while the sum is 39.

The square root of 1305377445 is about 36130.0075422079. The cubic root of 1305377445 is about 1092.8956603721.

The spelling of 1305377445 in words is "one billion, three hundred five million, three hundred seventy-seven thousand, four hundred forty-five".