5168931840 has 352 divisors, whose sum is σ = 18570384000. Its totient is φ = 1363378176.

The previous prime is 5168931827. The next prime is 5168931851. The reversal of 5168931840 is 481398615.

5168931840 is a `hidden beast` number, since 516 + 8 + 93 + 1 + 8 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19215226 + ... + 19215494.

Almost surely, 2^5168931840 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 5168931840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9285192000).

5168931840 is an abundant number, since it is smaller than the sum of its proper divisors (13401452160).

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

5168931840 is a wasteful number, since it uses less digits than its factorization.

5168931840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 5168931840 is about 71895.2838508897. The cubic root of 5168931840 is about 1729.0210015532.

The spelling of 5168931840 in words is "five billion, one hundred sixty-eight million, nine hundred thirty-one thousand, eight hundred forty".