6281491890 has 16 divisors (see below), whose sum is σ = 15075580608. Its totient is φ = 1675064496.

The previous prime is 6281491883. The next prime is 6281491913. The reversal of 6281491890 is 981941826.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104691502 + ... + 104691561.

It is an arithmetic number, because the mean of its divisors is an integer number (942223788).

Almost surely, 2^6281491890 is an apocalyptic number.

6281491890 is an abundant number, since it is smaller than the sum of its proper divisors (8794088718).

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

6281491890 is a wasteful number, since it uses less digits than its factorization.

6281491890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209383073.

The product of its (nonzero) digits is 248832, while the sum is 48.

The square root of 6281491890 is about 79255.8634423977. The cubic root of 6281491890 is about 1845.1043573143.

The spelling of 6281491890 in words is "six billion, two hundred eighty-one million, four hundred ninety-one thousand, eight hundred ninety".