1994337979201 has 4 divisors (see below), whose sum is σ = 1994423673600. Its totient is φ = 1994252284804.

The previous prime is 1994337979171. The next prime is 1994337979237. The reversal of 1994337979201 is 1029797334991.

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 1994337979201 - 2¹⁹ = 1994337454913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1994337979001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42812281 + ... + 42858838.

It is an arithmetic number, because the mean of its divisors is an integer number (498605918400).

Almost surely, 2^{1994337979201} is an apocalyptic number.

It is an amenable number.

1994337979201 is a deficient number, since it is larger than the sum of its proper divisors (85694399).

1994337979201 is an equidigital number, since it uses as much as digits as its factorization.

1994337979201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85694398.

The product of its (nonzero) digits is 23147208, while the sum is 64.

The spelling of 1994337979201 in words is "one trillion, nine hundred ninety-four billion, three hundred thirty-seven million, nine hundred seventy-nine thousand, two hundred one".