6451384932 has 72 divisors (see below), whose sum is σ = 17020818360. Its totient is φ = 2058401280.

The previous prime is 6451384897. The next prime is 6451384943. The reversal of 6451384932 is 2394831546.

6451384932 is a `hidden beast` number, since 64 + 513 + 8 + 49 + 32 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1954877796 + 4496507136 = 44214^2 + 67056^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36994 + ... + 119462.

It is an arithmetic number, because the mean of its divisors is an integer number (236400255).

Almost surely, 2^6451384932 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 6451384932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8510409180).

6451384932 is an abundant number, since it is smaller than the sum of its proper divisors (10569433428).

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

6451384932 is a wasteful number, since it uses less digits than its factorization.

6451384932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82573 (or 82568 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 6451384932 is about 80320.5137682772. The cubic root of 6451384932 is about 1861.5912051278.

The spelling of 6451384932 in words is "six billion, four hundred fifty-one million, three hundred eighty-four thousand, nine hundred thirty-two".