9822157457 has 12 divisors (see below), whose sum is σ = 11466452196. Its totient is φ = 8389019520.

The previous prime is 9822157451. The next prime is 9822157487. The reversal of 9822157457 is 7547512289.

It can be written as a sum of positive squares in 2 ways, for example, as 8574019216 + 1248138241 = 92596^2 + 35329^2 .

It is not a de Polignac number, because 9822157457 - 2⁴ = 9822157441 is a prime.

It is a super-2 number, since 2×9822157457² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9822157451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 342908 + ... + 370445.

It is an arithmetic number, because the mean of its divisors is an integer number (955537683).

Almost surely, 2^9822157457 is an apocalyptic number.

It is an amenable number.

9822157457 is a deficient number, since it is larger than the sum of its proper divisors (1644294739).

9822157457 is a wasteful number, since it uses less digits than its factorization.

9822157457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713648 (or 713641 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 50.

The square root of 9822157457 is about 99106.7982380624. The cubic root of 9822157457 is about 2141.5865499871.

The spelling of 9822157457 in words is "nine billion, eight hundred twenty-two million, one hundred fifty-seven thousand, four hundred fifty-seven".