1994048259901 has 4 divisors (see below), whose sum is σ = 1998549497952. Its totient is φ = 1989547021852.

The previous prime is 1994048259899. The next prime is 1994048259943. The reversal of 1994048259901 is 1099528404991.

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 1994048259901 - 2¹ = 1994048259899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1994048259901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994048259991) 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, 2250618361 + ... + 2250619246.

It is an arithmetic number, because the mean of its divisors is an integer number (499637374488).

Almost surely, 2^{1994048259901} is an apocalyptic number.

It is an amenable number.

1994048259901 is a deficient number, since it is larger than the sum of its proper divisors (4501238051).

1994048259901 is an equidigital number, since it uses as much as digits as its factorization.

1994048259901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4501238050.

The product of its (nonzero) digits is 8398080, while the sum is 61.

The spelling of 1994048259901 in words is "one trillion, nine hundred ninety-four billion, forty-eight million, two hundred fifty-nine thousand, nine hundred one".