1604401708 has 96 divisors (see below), whose sum is σ = 3680409600. Its totient is φ = 606957120.

The previous prime is 1604401693. The next prime is 1604401751. The reversal of 1604401708 is 8071044061.

It is a self number, because there is not a number n which added to its sum of digits gives 1604401708.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 408273 + ... + 412183.

It is an arithmetic number, because the mean of its divisors is an integer number (38337600).

Almost surely, 2^1604401708 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1604401708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1840204800).

1604401708 is an abundant number, since it is smaller than the sum of its proper divisors (2076007892).

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

1604401708 is a wasteful number, since it uses less digits than its factorization.

1604401708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3972 (or 3956 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 1604401708 is about 40054.9835601015. The cubic root of 1604401708 is about 1170.6786692502.

Adding to 1604401708 its reverse (8071044061), we get a palindrome (9675445769).

The spelling of 1604401708 in words is "one billion, six hundred four million, four hundred one thousand, seven hundred eight".