1604812349 has 8 divisors (see below), whose sum is σ = 1834433280. Its totient is φ = 1375281936.

The previous prime is 1604812337. The next prime is 1604812421. The reversal of 1604812349 is 9432184061.

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

It is not a de Polignac number, because 1604812349 - 2⁸ = 1604812093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604812549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20972 + ... + 60410.

It is an arithmetic number, because the mean of its divisors is an integer number (229304160).

Almost surely, 2^1604812349 is an apocalyptic number.

It is an amenable number.

1604812349 is a deficient number, since it is larger than the sum of its proper divisors (229620931).

1604812349 is an equidigital number, since it uses as much as digits as its factorization.

1604812349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45259.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 1604812349 is about 40060.1091985531. The cubic root of 1604812349 is about 1170.7785377659.

The spelling of 1604812349 in words is "one billion, six hundred four million, eight hundred twelve thousand, three hundred forty-nine".