6381392740 has 24 divisors (see below), whose sum is σ = 13414682232. Its totient is φ = 2549936640.

The previous prime is 6381392737. The next prime is 6381392779. The reversal of 6381392740 is 472931836.

It can be written as a sum of positive squares in 4 ways, for example, as 3959178084 + 2422214656 = 62922^2 + 49216^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143751 + ... + 182830.

It is an arithmetic number, because the mean of its divisors is an integer number (558945093).

Almost surely, 2^6381392740 is an apocalyptic number.

It is an amenable number.

6381392740 is an abundant number, since it is smaller than the sum of its proper divisors (7033289492).

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

6381392740 is a wasteful number, since it uses less digits than its factorization.

6381392740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327567 (or 327565 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 6381392740 is about 79883.6199730583. The cubic root of 6381392740 is about 1854.8344691403.

The spelling of 6381392740 in words is "six billion, three hundred eighty-one million, three hundred ninety-two thousand, seven hundred forty".