1604197872 has 100 divisors (see below), whose sum is σ = 4803230520. Its totient is φ = 516281472.

The previous prime is 1604197871. The next prime is 1604197919. The reversal of 1604197872 is 2787914061.

It is a happy number.

1604197872 is a `hidden beast` number, since 160 + 419 + 7 + 8 + 72 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604197871) 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 19 ways as a sum of consecutive naturals, for example, 16243 + ... + 58925.

Almost surely, 2^1604197872 is an apocalyptic number.

1604197872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1604197872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2401615260).

1604197872 is an abundant number, since it is smaller than the sum of its proper divisors (3199032648).

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

1604197872 is a wasteful number, since it uses less digits than its factorization.

1604197872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42732 (or 42717 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 1604197872 is about 40052.4390268558. The cubic root of 1604197872 is about 1170.6290896961.

The spelling of 1604197872 in words is "one billion, six hundred four million, one hundred ninety-seven thousand, eight hundred seventy-two".