1020157793 has 2 divisors, whose sum is σ = 1020157794. Its totient is φ = 1020157792.

The previous prime is 1020157753. The next prime is 1020157819. The reversal of 1020157793 is 3977510201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1019333329 + 824464 = 31927^2 + 908^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020157793 - 2⁶ = 1020157729 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1020157753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510078896 + 510078897.

It is an arithmetic number, because the mean of its divisors is an integer number (510078897).

Almost surely, 2^1020157793 is an apocalyptic number.

It is an amenable number.

1020157793 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020157793 is an equidigital number, since it uses as much as digits as its factorization.

1020157793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13230, while the sum is 35.

The square root of 1020157793 is about 31939.9090950491. The cubic root of 1020157793 is about 1006.6746147324.

Adding to 1020157793 its reverse (3977510201), we get a palindrome (4997667994).

The spelling of 1020157793 in words is "one billion, twenty million, one hundred fifty-seven thousand, seven hundred ninety-three".