481938309 has 8 divisors (see below), whose sum is σ = 713982720. Its totient is φ = 321292188.

The previous prime is 481938299. The next prime is 481938337. The reversal of 481938309 is 903839184.

481938309 is a `hidden beast` number, since 481 + 93 + 83 + 0 + 9 = 666.

It is not a de Polignac number, because 481938309 - 2⁵ = 481938277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481918309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8924757 + ... + 8924810.

It is an arithmetic number, because the mean of its divisors is an integer number (89247840).

Almost surely, 2^481938309 is an apocalyptic number.

It is an amenable number.

481938309 is a deficient number, since it is larger than the sum of its proper divisors (232044411).

481938309 is a wasteful number, since it uses less digits than its factorization.

481938309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17849576 (or 17849570 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 481938309 is about 21953.0933811160. The cubic root of 481938309 is about 784.0260326676.

The spelling of 481938309 in words is "four hundred eighty-one million, nine hundred thirty-eight thousand, three hundred nine".