2620485509 has 2 divisors, whose sum is σ = 2620485510. Its totient is φ = 2620485508.

The previous prime is 2620485493. The next prime is 2620485523. The reversal of 2620485509 is 9055840262.

2620485509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2411104609 + 209380900 = 49103^2 + 14470^2 .

It is a cyclic number.

It is not a de Polignac number, because 2620485509 - 2⁴ = 2620485493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2620485409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310242754 + 1310242755.

It is an arithmetic number, because the mean of its divisors is an integer number (1310242755).

Almost surely, 2^2620485509 is an apocalyptic number.

It is an amenable number.

2620485509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2620485509 is an equidigital number, since it uses as much as digits as its factorization.

2620485509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 2620485509 is about 51190.6779501893. The cubic root of 2620485509 is about 1378.6708319788.

The spelling of 2620485509 in words is "two billion, six hundred twenty million, four hundred eighty-five thousand, five hundred nine".