6451684338 has 32 divisors (see below), whose sum is σ = 14314993920. Its totient is φ = 1921918160.

The previous prime is 6451684307. The next prime is 6451684387. The reversal of 6451684338 is 8334861546.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 824520 + ... + 832307.

It is an arithmetic number, because the mean of its divisors is an integer number (447343560).

Almost surely, 2^6451684338 is an apocalyptic number.

6451684338 is an abundant number, since it is smaller than the sum of its proper divisors (7863309582).

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

6451684338 is a wasteful number, since it uses less digits than its factorization.

6451684338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656902.

The product of its digits is 1658880, while the sum is 48.

The square root of 6451684338 is about 80322.3775669022. The cubic root of 6451684338 is about 1861.6200032314.

The spelling of 6451684338 in words is "six billion, four hundred fifty-one million, six hundred eighty-four thousand, three hundred thirty-eight".