1298315722 has 12 divisors (see below), whose sum is σ = 2140611858. Its totient is φ = 590143400.

The previous prime is 1298315699. The next prime is 1298315723. The reversal of 1298315722 is 2275138921.

It can be written as a sum of positive squares in only one way, i.e., 1263162681 + 35153041 = 35541^2 + 5929^2 .

It is not an unprimeable number, because it can be changed into a prime (1298315723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2682229 + ... + 2682712.

Almost surely, 2^1298315722 is an apocalyptic number.

1298315722 is a deficient number, since it is larger than the sum of its proper divisors (842296136).

1298315722 is a wasteful number, since it uses less digits than its factorization.

1298315722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5364965 (or 5364954 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 1298315722 is about 36032.1484510707. The cubic root of 1298315722 is about 1090.9213437138.

The spelling of 1298315722 in words is "one billion, two hundred ninety-eight million, three hundred fifteen thousand, seven hundred twenty-two".