481937909 has 2 divisors, whose sum is σ = 481937910. Its totient is φ = 481937908.

The previous prime is 481937893. The next prime is 481937933. The reversal of 481937909 is 909739184.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 324360100 + 157577809 = 18010^2 + 12553^2 .

It is a cyclic number.

It is not a de Polignac number, because 481937909 - 2⁴ = 481937893 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (481937609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240968954 + 240968955.

It is an arithmetic number, because the mean of its divisors is an integer number (240968955).

Almost surely, 2^481937909 is an apocalyptic number.

It is an amenable number.

481937909 is a deficient number, since it is larger than the sum of its proper divisors (1).

481937909 is an equidigital number, since it uses as much as digits as its factorization.

481937909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 481937909 is about 21953.0842707807. The cubic root of 481937909 is about 784.0258157585.

The spelling of 481937909 in words is "four hundred eighty-one million, nine hundred thirty-seven thousand, nine hundred nine".