1322148257 has 4 divisors (see below), whose sum is σ = 1330259760. Its totient is φ = 1314036756.

The previous prime is 1322148241. The next prime is 1322148263. The reversal of 1322148257 is 7528412231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1322148257 - 2⁴ = 1322148241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1322148557) 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, 4055507 + ... + 4055832.

It is an arithmetic number, because the mean of its divisors is an integer number (332564940).

Almost surely, 2^1322148257 is an apocalyptic number.

It is an amenable number.

1322148257 is a deficient number, since it is larger than the sum of its proper divisors (8111503).

1322148257 is an equidigital number, since it uses as much as digits as its factorization.

1322148257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8111502.

The product of its digits is 26880, while the sum is 35.

The square root of 1322148257 is about 36361.3566441078. The cubic root of 1322148257 is about 1097.5560775479.

The spelling of 1322148257 in words is "one billion, three hundred twenty-two million, one hundred forty-eight thousand, two hundred fifty-seven".