631895488 has 56 divisors (see below), whose sum is σ = 1435571424. Its totient is φ = 270336000.

The previous prime is 631895479. The next prime is 631895489. The reversal of 631895488 is 884598136.

631895488 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631895489) 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, 393888 + ... + 395488.

It is an arithmetic number, because the mean of its divisors is an integer number (25635204).

Almost surely, 2^631895488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631895488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (717785712).

631895488 is an abundant number, since it is smaller than the sum of its proper divisors (803675936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631895488 is a wasteful number, since it uses less digits than its factorization.

631895488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2501 (or 2491 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 52.

The square root of 631895488 is about 25137.5314619395. The cubic root of 631895488 is about 858.1207785449.

The spelling of 631895488 in words is "six hundred thirty-one million, eight hundred ninety-five thousand, four hundred eighty-eight".