1604181789372 has 12 divisors (see below), whose sum is σ = 3743090841896. Its totient is φ = 534727263120.

The previous prime is 1604181789361. The next prime is 1604181789403. The reversal of 1604181789372 is 2739871814061.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66840907879 + ... + 66840907902.

Almost surely, 2^{1604181789372} is an apocalyptic number.

1604181789372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1604181789372 is an abundant number, since it is smaller than the sum of its proper divisors (2138909052524).

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

1604181789372 is a wasteful number, since it uses less digits than its factorization.

1604181789372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133681815788 (or 133681815786 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 57.

The spelling of 1604181789372 in words is "one trillion, six hundred four billion, one hundred eighty-one million, seven hundred eighty-nine thousand, three hundred seventy-two".