5639651892 has 156 divisors (see below), whose sum is σ = 16963586080. Its totient is φ = 1607077584.

The previous prime is 5639651881. The next prime is 5639651909. The reversal of 5639651892 is 2981569365.

It is a happy number.

5639651892 is a `hidden beast` number, since 5 + 6 + 39 + 6 + 518 + 92 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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 51 ways as a sum of consecutive naturals, for example, 14880159 + ... + 14880537.

Almost surely, 2^5639651892 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 5639651892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8481793040).

5639651892 is an abundant number, since it is smaller than the sum of its proper divisors (11323934188).

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

5639651892 is an frugal number, since it uses more digits than its factorization.

5639651892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 391 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The square root of 5639651892 is about 75097.6157544299. The cubic root of 5639651892 is about 1779.9894680183.

The spelling of 5639651892 in words is "five billion, six hundred thirty-nine million, six hundred fifty-one thousand, eight hundred ninety-two".