1631126064 has 80 divisors (see below), whose sum is σ = 4495962240. Its totient is φ = 507786240.

The previous prime is 1631126033. The next prime is 1631126069. The reversal of 1631126064 is 4606211361.

It is not an unprimeable number, because it can be changed into a prime (1631126069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99267 + ... + 114525.

It is an arithmetic number, because the mean of its divisors is an integer number (56199528).

Almost surely, 2^1631126064 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 1631126064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2247981120).

1631126064 is an abundant number, since it is smaller than the sum of its proper divisors (2864836176).

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

1631126064 is a wasteful number, since it uses less digits than its factorization.

1631126064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15418 (or 15412 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1631126064 is about 40387.2017352032. The cubic root of 1631126064 is about 1177.1428683306.

The spelling of 1631126064 in words is "one billion, six hundred thirty-one million, one hundred twenty-six thousand, sixty-four".