1993244800 has 48 divisors (see below), whose sum is σ = 4923945450. Its totient is φ = 797296640.

The previous prime is 1993244783. The next prime is 1993244821. The reversal of 1993244800 is 84423991.

It can be written as a sum of positive squares in 3 ways, for example, as 1240730176 + 752514624 = 35224^2 + 27432^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 308245 + ... + 314644.

Almost surely, 2^1993244800 is an apocalyptic number.

1993244800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1993244800 is an abundant number, since it is smaller than the sum of its proper divisors (2930700650).

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

1993244800 is an equidigital number, since it uses as much as digits as its factorization.

1993244800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622913 (or 622896 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 1993244800 is about 44645.7702363841. The cubic root of 1993244800 is about 1258.5009467333.

The spelling of 1993244800 in words is "one billion, nine hundred ninety-three million, two hundred forty-four thousand, eight hundred".