5319731640 has 128 divisors (see below), whose sum is σ = 16815651840. Its totient is φ = 1343671296.

The previous prime is 5319731639. The next prime is 5319731687. The reversal of 5319731640 is 461379135.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 274924 + ... + 293636.

It is an arithmetic number, because the mean of its divisors is an integer number (131372280).

Almost surely, 2^5319731640 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 5319731640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8407825920).

5319731640 is an abundant number, since it is smaller than the sum of its proper divisors (11495920200).

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

5319731640 is a wasteful number, since it uses less digits than its factorization.

5319731640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18853 (or 18849 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 5319731640 is about 72936.4904557383. The cubic root of 5319731640 is about 1745.6743933445.

The spelling of 5319731640 in words is "five billion, three hundred nineteen million, seven hundred thirty-one thousand, six hundred forty".