1693999104 has 224 divisors, whose sum is σ = 5305470720. Its totient is φ = 470679552.

The previous prime is 1693999103. The next prime is 1693999129. The reversal of 1693999104 is 4019993961.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1693999103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7397262 + ... + 7397490.

Almost surely, 2^1693999104 is an apocalyptic number.

1693999104 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 1693999104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2652735360).

1693999104 is an abundant number, since it is smaller than the sum of its proper divisors (3611471616).

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

1693999104 is an equidigital number, since it uses as much as digits as its factorization.

1693999104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 51.

The square root of 1693999104 is about 41158.2203696904. The cubic root of 1693999104 is about 1192.0772287545.

It can be divided in two parts, 169399 and 9104, that added together give a triangular number (178503 = T₅₉₇).

The spelling of 1693999104 in words is "one billion, six hundred ninety-three million, nine hundred ninety-nine thousand, one hundred four".