1305244093 has 4 divisors (see below), whose sum is σ = 1350252540. Its totient is φ = 1260235648.

The previous prime is 1305244067. The next prime is 1305244099. The reversal of 1305244093 is 3904425031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 716793529 + 588450564 = 26773^2 + 24258^2 .

It is a cyclic number.

It is not a de Polignac number, because 1305244093 - 2²¹ = 1303146941 is a prime.

It is a super-2 number, since 2×1305244093² = 3407324284622785298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305244099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22504180 + ... + 22504237.

It is an arithmetic number, because the mean of its divisors is an integer number (337563135).

Almost surely, 2^1305244093 is an apocalyptic number.

It is an amenable number.

1305244093 is a deficient number, since it is larger than the sum of its proper divisors (45008447).

1305244093 is an equidigital number, since it uses as much as digits as its factorization.

1305244093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45008446.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1305244093 is about 36128.1620484630. The cubic root of 1305244093 is about 1092.8584438603.

The spelling of 1305244093 in words is "one billion, three hundred five million, two hundred forty-four thousand, ninety-three".