1693863936 has 78 divisors (see below), whose sum is σ = 4892893850. Its totient is φ = 564609024.

The previous prime is 1693863907. The next prime is 1693863947. The reversal of 1693863936 is 6393683961.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1625702400 + 68161536 = 40320^2 + 8256^2 .

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13890 + ... + 59838.

Almost surely, 2^1693863936 is an apocalyptic number.

1693863936 is a gapful number since it is divisible by the number (16) 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 1693863936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2446446925).

1693863936 is an abundant number, since it is smaller than the sum of its proper divisors (3199029914).

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

1693863936 is an equidigital number, since it uses as much as digits as its factorization.

1693863936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45979 (or 45954 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 54.

The square root of 1693863936 is about 41156.5782834288. The cubic root of 1693863936 is about 1192.0455217364.

The spelling of 1693863936 in words is "one billion, six hundred ninety-three million, eight hundred sixty-three thousand, nine hundred thirty-six".