17985738904 has 48 divisors (see below), whose sum is σ = 40934732400. Its totient is φ = 7373032128.

The previous prime is 17985738889. The next prime is 17985738907. The reversal of 17985738904 is 40983758971.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17985738907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 988419 + ... + 1006450.

It is an arithmetic number, because the mean of its divisors is an integer number (852806925).

Almost surely, 2^17985738904 is an apocalyptic number.

17985738904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

17985738904 is an abundant number, since it is smaller than the sum of its proper divisors (22948993496).

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

17985738904 is a wasteful number, since it uses less digits than its factorization.

17985738904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994912 (or 1994901 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 61.

The spelling of 17985738904 in words is "seventeen billion, nine hundred eighty-five million, seven hundred thirty-eight thousand, nine hundred four".