1604726478 has 20 divisors (see below), whose sum is σ = 3595776360. Its totient is φ = 534908772.

The previous prime is 1604726467. The next prime is 1604726479. The reversal of 1604726478 is 8746274061.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604726479) 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 9 ways as a sum of consecutive naturals, for example, 4952698 + ... + 4953021.

It is an arithmetic number, because the mean of its divisors is an integer number (179788818).

Almost surely, 2^1604726478 is an apocalyptic number.

1604726478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1604726478 is an abundant number, since it is smaller than the sum of its proper divisors (1991049882).

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

1604726478 is an equidigital number, since it uses as much as digits as its factorization.

1604726478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9905733 (or 9905724 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 1604726478 is about 40059.0374073067. The cubic root of 1604726478 is about 1170.7576552170.

The spelling of 1604726478 in words is "one billion, six hundred four million, seven hundred twenty-six thousand, four hundred seventy-eight".