901966609 has 2 divisors, whose sum is σ = 901966610. Its totient is φ = 901966608.

The previous prime is 901966601. The next prime is 901966619. The reversal of 901966609 is 906669109.

901966609 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., 832611025 + 69355584 = 28855^2 + 8328^2 .

It is a cyclic number.

It is not a de Polignac number, because 901966609 - 2³ = 901966601 is a prime.

It is not a weakly prime, because it can be changed into another prime (901966601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450983304 + 450983305.

It is an arithmetic number, because the mean of its divisors is an integer number (450983305).

Almost surely, 2^901966609 is an apocalyptic number.

It is an amenable number.

901966609 is a deficient number, since it is larger than the sum of its proper divisors (1).

901966609 is an equidigital number, since it uses as much as digits as its factorization.

901966609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 901966609 is about 30032.7589308741. The cubic root of 901966609 is about 966.1921100861.

The spelling of 901966609 in words is "nine hundred one million, nine hundred sixty-six thousand, six hundred nine".