634145512 has 192 divisors, whose sum is σ = 1683843840. Its totient is φ = 217451520.

The previous prime is 634145497. The next prime is 634145531. The reversal of 634145512 is 215541436.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2025868 + ... + 2026180.

It is an arithmetic number, because the mean of its divisors is an integer number (8770020).

Almost surely, 2^634145512 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 634145512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (841921920).

634145512 is an abundant number, since it is smaller than the sum of its proper divisors (1049698328).

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

634145512 is a wasteful number, since it uses less digits than its factorization.

634145512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 369 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 634145512 is about 25182.2459681419. The cubic root of 634145512 is about 859.1380908558.

Adding to 634145512 its reverse (215541436), we get a palindrome (849686948).

The spelling of 634145512 in words is "six hundred thirty-four million, one hundred forty-five thousand, five hundred twelve".