488731631749 has 4 divisors (see below), whose sum is σ = 488982393900. Its totient is φ = 488480869600.

The previous prime is 488731631737. The next prime is 488731631783. The reversal of 488731631749 is 947136137884.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 404854783524 + 83876848225 = 636282^2 + 289615^2 .

It is a cyclic number.

It is not a de Polignac number, because 488731631749 - 2³³ = 480141697157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (488731631149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125378152 + ... + 125382049.

It is an arithmetic number, because the mean of its divisors is an integer number (122245598475).

Almost surely, 2^488731631749 is an apocalyptic number.

It is an amenable number.

488731631749 is a deficient number, since it is larger than the sum of its proper divisors (250762151).

488731631749 is a wasteful number, since it uses less digits than its factorization.

488731631749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250762150.

The product of its digits is 24385536, while the sum is 61.

The spelling of 488731631749 in words is "four hundred eighty-eight billion, seven hundred thirty-one million, six hundred thirty-one thousand, seven hundred forty-nine".