1306274722 has 4 divisors (see below), whose sum is σ = 1959412086. Its totient is φ = 653137360.

The previous prime is 1306274699. The next prime is 1306274731. The reversal of 1306274722 is 2274726031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2274726031 = 2521 ⋅902311.

It can be written as a sum of positive squares in only one way, i.e., 1240518841 + 65755881 = 35221^2 + 8109^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326568679 + ... + 326568682.

Almost surely, 2^1306274722 is an apocalyptic number.

1306274722 is a deficient number, since it is larger than the sum of its proper divisors (653137364).

1306274722 is an equidigital number, since it uses as much as digits as its factorization.

1306274722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653137363.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 1306274722 is about 36142.4227466837. The cubic root of 1306274722 is about 1093.1460108342.

The spelling of 1306274722 in words is "one billion, three hundred six million, two hundred seventy-four thousand, seven hundred twenty-two".