1994001497194 has 12 divisors (see below), whose sum is σ = 3479329143234. Its totient is φ = 854572070184.

The previous prime is 1994001497099. The next prime is 1994001497207. The reversal of 1994001497194 is 4917941004991.

It can be written as a sum of positive squares in only one way, i.e., 1458817074225 + 535184422969 = 1207815^2 + 731563^2 .

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 in 5 ways as a sum of consecutive naturals, for example, 10173476929 + ... + 10173477124.

Almost surely, 2^{1994001497194} is an apocalyptic number.

1994001497194 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1994001497194 is a deficient number, since it is larger than the sum of its proper divisors (1485327646040).

1994001497194 is a wasteful number, since it uses less digits than its factorization.

1994001497194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20346954069 (or 20346954062 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 58.

The spelling of 1994001497194 in words is "one trillion, nine hundred ninety-four billion, one million, four hundred ninety-seven thousand, one hundred ninety-four".