1051820839 has 2 divisors, whose sum is σ = 1051820840. Its totient is φ = 1051820838.

The previous prime is 1051820747. The next prime is 1051820911. The reversal of 1051820839 is 9380281501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1051820839 - 2¹⁵ = 1051788071 is a prime.

It is a super-2 number, since 2×1051820839² = 2212654154709327842, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1051820798 and 1051820807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1051827839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525910419 + 525910420.

It is an arithmetic number, because the mean of its divisors is an integer number (525910420).

Almost surely, 2^1051820839 is an apocalyptic number.

1051820839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051820839 is an equidigital number, since it uses as much as digits as its factorization.

1051820839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 1051820839 is about 32431.7874777201. The cubic root of 1051820839 is about 1016.9835394728.

The spelling of 1051820839 in words is "one billion, fifty-one million, eight hundred twenty thousand, eight hundred thirty-nine".