1993794801 has 4 divisors (see below), whose sum is σ = 2658393072. Its totient is φ = 1329196532.

The previous prime is 1993794787. The next prime is 1993794809. The reversal of 1993794801 is 1084973991.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1993794801 - 2¹⁵ = 1993762033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1993794809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332299131 + ... + 332299136.

It is an arithmetic number, because the mean of its divisors is an integer number (664598268).

Almost surely, 2^1993794801 is an apocalyptic number.

It is an amenable number.

1993794801 is a deficient number, since it is larger than the sum of its proper divisors (664598271).

1993794801 is an equidigital number, since it uses as much as digits as its factorization.

1993794801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664598270.

The product of its (nonzero) digits is 489888, while the sum is 51.

The square root of 1993794801 is about 44651.9294207988. The cubic root of 1993794801 is about 1258.6166898546.

The spelling of 1993794801 in words is "one billion, nine hundred ninety-three million, seven hundred ninety-four thousand, eight hundred one".