1604378474 has 8 divisors (see below), whose sum is σ = 2411928900. Its totient is φ = 800402176.

The previous prime is 1604378471. The next prime is 1604378483. The reversal of 1604378474 is 4748734061.

It can be written as a sum of positive squares in 2 ways, for example, as 1525293025 + 79085449 = 39055^2 + 8893^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1604378471) 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 3 ways as a sum of consecutive naturals, for example, 892409 + ... + 894204.

Almost surely, 2^1604378474 is an apocalyptic number.

1604378474 is a deficient number, since it is larger than the sum of its proper divisors (807550426).

1604378474 is a wasteful number, since it uses less digits than its factorization.

1604378474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1787064.

The product of its (nonzero) digits is 451584, while the sum is 44.

The square root of 1604378474 is about 40054.6935327185. The cubic root of 1604378474 is about 1170.6730181967.

The spelling of 1604378474 in words is "one billion, six hundred four million, three hundred seventy-eight thousand, four hundred seventy-four".