3455781649 has 2 divisors, whose sum is σ = 3455781650. Its totient is φ = 3455781648.

The previous prime is 3455781587. The next prime is 3455781701. The reversal of 3455781649 is 9461875543.

It is an a-pointer prime, because the next prime (3455781701) can be obtained adding 3455781649 to its sum of digits (52).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2770127424 + 685654225 = 52632^2 + 26185^2 .

It is a cyclic number.

It is not a de Polignac number, because 3455781649 - 2¹³ = 3455773457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3455781596 and 3455781605.

It is not a weakly prime, because it can be changed into another prime (3455781449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1727890824 + 1727890825.

It is an arithmetic number, because the mean of its divisors is an integer number (1727890825).

Almost surely, 2^3455781649 is an apocalyptic number.

It is an amenable number.

3455781649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3455781649 is an equidigital number, since it uses as much as digits as its factorization.

3455781649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3628800, while the sum is 52.

The square root of 3455781649 is about 58785.8966844940. The cubic root of 3455781649 is about 1511.8734183443.

The spelling of 3455781649 in words is "three billion, four hundred fifty-five million, seven hundred eighty-one thousand, six hundred forty-nine".