6381021642 has 8 divisors (see below), whose sum is σ = 12762043296. Its totient is φ = 2127007212.

The previous prime is 6381021611. The next prime is 6381021653. The reversal of 6381021642 is 2461201836.

It is a sphenic number, since it is the product of 3 distinct primes.

6381021642 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531751798 + ... + 531751809.

It is an arithmetic number, because the mean of its divisors is an integer number (1595255412).

Almost surely, 2^6381021642 is an apocalyptic number.

6381021642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6381021642 is a wasteful number, since it uses less digits than its factorization.

6381021642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063503612.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 6381021642 is about 79881.2971977797. The cubic root of 6381021642 is about 1854.7985136296.

The spelling of 6381021642 in words is "six billion, three hundred eighty-one million, twenty-one thousand, six hundred forty-two".