1305454345 has 16 divisors (see below), whose sum is σ = 1693076112. Its totient is φ = 960583680.

The previous prime is 1305454333. The next prime is 1305454369. The reversal of 1305454345 is 5434545031.

It can be written as a sum of positive squares in 8 ways, for example, as 1666681 + 1303787664 = 1291^2 + 36108^2 .

It is not a de Polignac number, because 1305454345 - 2¹¹ = 1305452297 is a prime.

It is a super-2 number, since 2×1305454345² = 3408422093758758050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1305454345.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17472 + ... + 54001.

It is an arithmetic number, because the mean of its divisors is an integer number (105817257).

Almost surely, 2^1305454345 is an apocalyptic number.

It is an amenable number.

1305454345 is a deficient number, since it is larger than the sum of its proper divisors (387621767).

1305454345 is a wasteful number, since it uses less digits than its factorization.

1305454345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71772.

The product of its (nonzero) digits is 72000, while the sum is 34.

The square root of 1305454345 is about 36131.0717388787. The cubic root of 1305454345 is about 1092.9171208384.

Adding to 1305454345 its reverse (5434545031), we get a palindrome (6739999376).

The spelling of 1305454345 in words is "one billion, three hundred five million, four hundred fifty-four thousand, three hundred forty-five".