4026578646 has 64 divisors (see below), whose sum is σ = 8382963456. Its totient is φ = 1288560000.

The previous prime is 4026578627. The next prime is 4026578659. The reversal of 4026578646 is 6468756204.

It is a junction number, because it is equal to n+sod(n) for n = 4026578595 and 4026578604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4868485 + ... + 4869311.

It is an arithmetic number, because the mean of its divisors is an integer number (130983804).

Almost surely, 2^4026578646 is an apocalyptic number.

4026578646 is an abundant number, since it is smaller than the sum of its proper divisors (4356384810).

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

4026578646 is a wasteful number, since it uses less digits than its factorization.

4026578646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197.

The product of its (nonzero) digits is 1935360, while the sum is 48.

The square root of 4026578646 is about 63455.3279559723. The cubic root of 4026578646 is about 1590.9092074534.

The spelling of 4026578646 in words is "four billion, twenty-six million, five hundred seventy-eight thousand, six hundred forty-six".