2028381407 has 8 divisors (see below), whose sum is σ = 2185955184. Its totient is φ = 1871028288.

The previous prime is 2028381379. The next prime is 2028381409. The reversal of 2028381407 is 7041838202.

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

It is a cyclic number.

It is not a de Polignac number, because 2028381407 - 2¹⁰ = 2028380383 is a prime.

It is a super-2 number, since 2×2028381407² = 8228662264526599298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028381409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35813 + ... + 73070.

It is an arithmetic number, because the mean of its divisors is an integer number (273244398).

Almost surely, 2^2028381407 is an apocalyptic number.

2028381407 is a deficient number, since it is larger than the sum of its proper divisors (157573777).

2028381407 is a wasteful number, since it uses less digits than its factorization.

2028381407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110329.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 2028381407 is about 45037.5555175900. Note that the first 4 decimals coincide. The cubic root of 2028381407 is about 1265.8528011979.

The spelling of 2028381407 in words is "two billion, twenty-eight million, three hundred eighty-one thousand, four hundred seven".