194948849491 has 4 divisors (see below), whose sum is σ = 212671472184. Its totient is φ = 177226226800.

The previous prime is 194948849461. The next prime is 194948849533.

194948849491 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 194948849491 - 2¹³ = 194948841299 is a prime.

It is a super-3 number, since 3×194948849491³ (a number of 35 digits) contains 333 as substring.

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 194948849491.

It is not an unprimeable number, because it can be changed into a prime (194948849411) 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, 8861311330 + ... + 8861311351.

It is an arithmetic number, because the mean of its divisors is an integer number (53167868046).

Almost surely, 2^194948849491 is an apocalyptic number.

194948849491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

194948849491 is a deficient number, since it is larger than the sum of its proper divisors (17722622693).

194948849491 is a wasteful number, since it uses less digits than its factorization.

194948849491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17722622692.

The product of its digits is 107495424, while the sum is 70.

The spelling of 194948849491 in words is "one hundred ninety-four billion, nine hundred forty-eight million, eight hundred forty-nine thousand, four hundred ninety-one".