1288830973 has 2 divisors, whose sum is σ = 1288830974. Its totient is φ = 1288830972.

The previous prime is 1288830929. The next prime is 1288831001. The reversal of 1288830973 is 3790388821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1282570969 + 6260004 = 35813^2 + 2502^2 .

It is an emirp because it is prime and its reverse (3790388821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1288830973 - 2²⁹ = 751960061 is a prime.

It is a super-2 number, since 2×1288830973² = 3322170553928253458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1288830923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644415486 + 644415487.

It is an arithmetic number, because the mean of its divisors is an integer number (644415487).

Almost surely, 2^1288830973 is an apocalyptic number.

It is an amenable number.

1288830973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1288830973 is an equidigital number, since it uses as much as digits as its factorization.

1288830973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 1288830973 is about 35900.2921018757. The cubic root of 1288830973 is about 1088.2582999963.

The spelling of 1288830973 in words is "one billion, two hundred eighty-eight million, eight hundred thirty thousand, nine hundred seventy-three".