1994113849 has 16 divisors (see below), whose sum is σ = 2504387200. Its totient is φ = 1577756880.

The previous prime is 1994113837. The next prime is 1994113861. The reversal of 1994113849 is 9483114991.

It is an interprime number because it is at equal distance from previous prime (1994113837) and next prime (1994113861).

It is not a de Polignac number, because 1994113849 - 2²⁵ = 1960559417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (1994153849) 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 15 ways as a sum of consecutive naturals, for example, 219147 + ... + 228064.

It is an arithmetic number, because the mean of its divisors is an integer number (156524200).

Almost surely, 2^1994113849 is an apocalyptic number.

It is an amenable number.

1994113849 is a deficient number, since it is larger than the sum of its proper divisors (510273351).

1994113849 is an equidigital number, since it uses as much as digits as its factorization.

1994113849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447245 (or 447231 counting only the distinct ones).

The product of its digits is 279936, while the sum is 49.

The square root of 1994113849 is about 44655.5018894649. The cubic root of 1994113849 is about 1258.6838210893.

The spelling of 1994113849 in words is "one billion, nine hundred ninety-four million, one hundred thirteen thousand, eight hundred forty-nine".