1604187312 has 80 divisors (see below), whose sum is σ = 5100506880. Its totient is φ = 423081216.

The previous prime is 1604187311. The next prime is 1604187313. The reversal of 1604187312 is 2137814061.

It is an interprime number because it is at equal distance from previous prime (1604187311) and next prime (1604187313).

It is not an unprimeable number, because it can be changed into a prime (1604187311) 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 15 ways as a sum of consecutive naturals, for example, 179262 + ... + 187997.

It is an arithmetic number, because the mean of its divisors is an integer number (63756336).

Almost surely, 2^1604187312 is an apocalyptic number.

1604187312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1604187312 is an abundant number, since it is smaller than the sum of its proper divisors (3496319568).

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

1604187312 is a wasteful number, since it uses less digits than its factorization.

1604187312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367290 (or 367284 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 1604187312 is about 40052.3071994611. The cubic root of 1604187312 is about 1170.6265210458.

The spelling of 1604187312 in words is "one billion, six hundred four million, one hundred eighty-seven thousand, three hundred twelve".