1994753801 has 2 divisors, whose sum is σ = 1994753802. Its totient is φ = 1994753800.

The previous prime is 1994753773. The next prime is 1994753809. The reversal of 1994753801 is 1083574991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1652503801 + 342250000 = 40651^2 + 18500^2 .

It is a cyclic number.

It is not a de Polignac number, because 1994753801 - 2¹⁴ = 1994737417 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1994753809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 997376900 + 997376901.

It is an arithmetic number, because the mean of its divisors is an integer number (997376901).

Almost surely, 2^1994753801 is an apocalyptic number.

It is an amenable number.

1994753801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1994753801 is an equidigital number, since it uses as much as digits as its factorization.

1994753801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 47.

The square root of 1994753801 is about 44662.6667475197. Note that the first 3 decimals coincide. The cubic root of 1994753801 is about 1258.8184524993.

The spelling of 1994753801 in words is "one billion, nine hundred ninety-four million, seven hundred fifty-three thousand, eight hundred one".