6403384854 has 48 divisors (see below), whose sum is σ = 14430915408. Its totient is φ = 2128073472.

The previous prime is 6403384837. The next prime is 6403384907. The reversal of 6403384854 is 4584833046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 144234 + ... + 183330.

It is an arithmetic number, because the mean of its divisors is an integer number (300644071).

Almost surely, 2^6403384854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6403384854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7215457704).

6403384854 is an abundant number, since it is smaller than the sum of its proper divisors (8027530554).

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

6403384854 is a wasteful number, since it uses less digits than its factorization.

6403384854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39451 (or 39439 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The square root of 6403384854 is about 80021.1525410625. The cubic root of 6403384854 is about 1856.9627903527.

The spelling of 6403384854 in words is "six billion, four hundred three million, three hundred eighty-four thousand, eight hundred fifty-four".