993103644 has 48 divisors (see below), whose sum is σ = 2498733440. Its totient is φ = 305173440.

The previous prime is 993103633. The next prime is 993103663. The reversal of 993103644 is 446301399.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130299 + ... + 137709.

Almost surely, 2^993103644 is an apocalyptic number.

It is an amenable number.

993103644 is an abundant number, since it is smaller than the sum of its proper divisors (1505629796).

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

993103644 is a wasteful number, since it uses less digits than its factorization.

993103644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8290 (or 8288 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 993103644 is about 31513.5469917304. The cubic root of 993103644 is about 997.6959099129.

The spelling of 993103644 in words is "nine hundred ninety-three million, one hundred three thousand, six hundred forty-four".