531899368 has 128 divisors (see below), whose sum is σ = 1352171520. Its totient is φ = 189423360.

The previous prime is 531899359. The next prime is 531899387. The reversal of 531899368 is 863998135.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1016755 + ... + 1017277.

It is an arithmetic number, because the mean of its divisors is an integer number (10563840).

Almost surely, 2^531899368 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 531899368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (676085760).

531899368 is an abundant number, since it is smaller than the sum of its proper divisors (820272152).

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

531899368 is a wasteful number, since it uses less digits than its factorization.

531899368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687 (or 683 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 52.

The square root of 531899368 is about 23062.9436109097. The cubic root of 531899368 is about 810.2328081503.

The spelling of 531899368 in words is "five hundred thirty-one million, eight hundred ninety-nine thousand, three hundred sixty-eight".