1604494100 has 36 divisors (see below), whose sum is σ = 3798277728. Its totient is φ = 583452000.

The previous prime is 1604494093. The next prime is 1604494109. The reversal of 1604494100 is 14944061.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604494109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 728216 + ... + 730415.

Almost surely, 2^1604494100 is an apocalyptic number.

1604494100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1604494100 is an abundant number, since it is smaller than the sum of its proper divisors (2193783628).

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

1604494100 is a wasteful number, since it uses less digits than its factorization.

1604494100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458656 (or 1458649 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1604494100 is about 40056.1368581644. The cubic root of 1604494100 is about 1170.7011406107.

The spelling of 1604494100 in words is "one billion, six hundred four million, four hundred ninety-four thousand, one hundred".