1993711802 has 4 divisors (see below), whose sum is σ = 2990567706. Its totient is φ = 996855900.

The previous prime is 1993711777. The next prime is 1993711823. The reversal of 1993711802 is 2081173991.

It is a happy number.

It is a Cunningham number, because it is equal to 44651²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1993711801 + 1 = 44651^2 + 1^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1993711802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498427949 + ... + 498427952.

Almost surely, 2^1993711802 is an apocalyptic number.

1993711802 is a deficient number, since it is larger than the sum of its proper divisors (996855904).

1993711802 is an equidigital number, since it uses as much as digits as its factorization.

1993711802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996855903.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 1993711802 is about 44651.0000111980. Note that the first 4 decimals coincide. The cubic root of 1993711802 is about 1258.5992247714.

The spelling of 1993711802 in words is "one billion, nine hundred ninety-three million, seven hundred eleven thousand, eight hundred two".