488321781 has 8 divisors (see below), whose sum is σ = 651696864. Its totient is φ = 325247280.

The previous prime is 488321777. The next prime is 488321783. The reversal of 488321781 is 187123884.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 488321781 - 2² = 488321777 is a prime.

It is a super-2 number, since 2×488321781² = 476916323598023922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (488321783) 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 in 7 ways as a sum of consecutive naturals, for example, 71326 + ... + 77871.

It is an arithmetic number, because the mean of its divisors is an integer number (81462108).

Almost surely, 2^488321781 is an apocalyptic number.

It is an amenable number.

488321781 is a deficient number, since it is larger than the sum of its proper divisors (163375083).

488321781 is a wasteful number, since it uses less digits than its factorization.

488321781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150291.

The product of its digits is 86016, while the sum is 42.

The square root of 488321781 is about 22098.0040048870. The cubic root of 488321781 is about 787.4724436818.

The spelling of 488321781 in words is "four hundred eighty-eight million, three hundred twenty-one thousand, seven hundred eighty-one".