1051315789 has 2 divisors, whose sum is σ = 1051315790. Its totient is φ = 1051315788.

The previous prime is 1051315757. The next prime is 1051315799. The reversal of 1051315789 is 9875131501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 929213289 + 122102500 = 30483^2 + 11050^2 .

It is an emirp because it is prime and its reverse (9875131501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1051315789 - 2⁵ = 1051315757 is a prime.

It is a super-2 number, since 2×1051315789² = 2210529776401385042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1051315799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525657894 + 525657895.

It is an arithmetic number, because the mean of its divisors is an integer number (525657895).

Almost surely, 2^1051315789 is an apocalyptic number.

It is an amenable number.

1051315789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051315789 is an equidigital number, since it uses as much as digits as its factorization.

1051315789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 40.

The square root of 1051315789 is about 32424.0002004688. Note that the first 3 decimals coincide. The cubic root of 1051315789 is about 1016.8207393239.

The spelling of 1051315789 in words is "one billion, fifty-one million, three hundred fifteen thousand, seven hundred eighty-nine".