3989618146819 has 4 divisors (see below), whose sum is σ = 3989967420096. Its totient is φ = 3989268873544.

The previous prime is 3989618146807. The next prime is 3989618146837. The reversal of 3989618146819 is 9186418169893.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3989618146819 - 2⁷ = 3989618146691 is a prime.

It is a super-2 number, since 2×3989618146819² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3989618146849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174619504 + ... + 174642349.

It is an arithmetic number, because the mean of its divisors is an integer number (997491855024).

Almost surely, 2^{3989618146819} is an apocalyptic number.

3989618146819 is a deficient number, since it is larger than the sum of its proper divisors (349273277).

3989618146819 is a wasteful number, since it uses less digits than its factorization.

3989618146819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349273276.

The product of its digits is 161243136, while the sum is 73.

The spelling of 3989618146819 in words is "three trillion, nine hundred eighty-nine billion, six hundred eighteen million, one hundred forty-six thousand, eight hundred nineteen".