1013095621 has 2 divisors, whose sum is σ = 1013095622. Its totient is φ = 1013095620.

The previous prime is 1013095619. The next prime is 1013095627. The reversal of 1013095621 is 1265903101.

1013095621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 640798596 + 372297025 = 25314^2 + 19295^2 .

It is a cyclic number.

It is not a de Polignac number, because 1013095621 - 2¹ = 1013095619 is a prime.

Together with 1013095619, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1013095621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1013095627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506547810 + 506547811.

It is an arithmetic number, because the mean of its divisors is an integer number (506547811).

Almost surely, 2^1013095621 is an apocalyptic number.

It is an amenable number.

1013095621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1013095621 is an equidigital number, since it uses as much as digits as its factorization.

1013095621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 1013095621 is about 31829.1630584280. The cubic root of 1013095621 is about 1004.3462894010.

Adding to 1013095621 its reverse (1265903101), we get a palindrome (2278998722).

The spelling of 1013095621 in words is "one billion, thirteen million, ninety-five thousand, six hundred twenty-one".