1604237090904 has 352 divisors, whose sum is σ = 5334574644000. Its totient is φ = 442521709056.

The previous prime is 1604237090893. The next prime is 1604237090927. The reversal of 1604237090904 is 4090907324061.

It is a happy number.

1604237090904 is a `hidden beast` number, since 1 + 604 + 2 + 37 + 0 + 9 + 0 + 9 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1604237090904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 87 ways as a sum of consecutive naturals, for example, 95887212 + ... + 95903940.

Almost surely, 2^{1604237090904} is an apocalyptic number.

1604237090904 is a gapful number since it is divisible by the number (14) 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 1604237090904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2667287322000).

1604237090904 is an abundant number, since it is smaller than the sum of its proper divisors (3730337553096).

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

1604237090904 is an equidigital number, since it uses as much as digits as its factorization.

1604237090904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16801 (or 16770 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 1604237090904 in words is "one trillion, six hundred four billion, two hundred thirty-seven million, ninety thousand, nine hundred four".