1016281638 has 12 divisors (see below), whose sum is σ = 2201943588. Its totient is φ = 338760540.

The previous prime is 1016281601. The next prime is 1016281663. The reversal of 1016281638 is 8361826101.

1016281638 is a `hidden beast` number, since 1 + 0 + 16 + 2 + 8 + 1 + 638 = 666.

1016281638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28230028 + ... + 28230063.

It is an arithmetic number, because the mean of its divisors is an integer number (183495299).

Almost surely, 2^1016281638 is an apocalyptic number.

1016281638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1016281638 is an abundant number, since it is smaller than the sum of its proper divisors (1185661950).

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

1016281638 is a wasteful number, since it uses less digits than its factorization.

1016281638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56460099 (or 56460096 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1016281638 is about 31879.1724798496. The cubic root of 1016281638 is about 1005.3980215992.

The spelling of 1016281638 in words is "one billion, sixteen million, two hundred eighty-one thousand, six hundred thirty-eight".