3889281813 has 8 divisors (see below), whose sum is σ = 5186744928. Its totient is φ = 2592336624.

The previous prime is 3889281787. The next prime is 3889281821. The reversal of 3889281813 is 3181829883.

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

It is not a de Polignac number, because 3889281813 - 2¹³ = 3889273621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3889281883) 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, 111606 + ... + 142247.

It is an arithmetic number, because the mean of its divisors is an integer number (648343116).

Almost surely, 2^3889281813 is an apocalyptic number.

It is an amenable number.

3889281813 is a deficient number, since it is larger than the sum of its proper divisors (1297463115).

3889281813 is a wasteful number, since it uses less digits than its factorization.

3889281813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258963.

The product of its digits is 663552, while the sum is 51.

The square root of 3889281813 is about 62364.1067682365. The cubic root of 3889281813 is about 1572.6176210565.

The spelling of 3889281813 in words is "three billion, eight hundred eighty-nine million, two hundred eighty-one thousand, eight hundred thirteen".