384645402749 has 32 divisors (see below), whose sum is σ = 414691280640. Its totient is φ = 355870873600.

The previous prime is 384645402719. The next prime is 384645402751. The reversal of 384645402749 is 947204546483.

It is a cyclic number.

It is not a de Polignac number, because 384645402749 - 2²⁰ = 384644354173 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 384645402694 and 384645402703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384645402719) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140946017 + ... + 140948745.

It is an arithmetic number, because the mean of its divisors is an integer number (12959102520).

Almost surely, 2^384645402749 is an apocalyptic number.

It is an amenable number.

384645402749 is a deficient number, since it is larger than the sum of its proper divisors (30045877891).

384645402749 is a wasteful number, since it uses less digits than its factorization.

384645402749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4021.

The product of its (nonzero) digits is 23224320, while the sum is 56.

The spelling of 384645402749 in words is "three hundred eighty-four billion, six hundred forty-five million, four hundred two thousand, seven hundred forty-nine".