194821512103 has 2 divisors, whose sum is σ = 194821512104. Its totient is φ = 194821512102.

The previous prime is 194821512079. The next prime is 194821512203. The reversal of 194821512103 is 301215128491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 194821512103 - 2¹³ = 194821503911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194821512203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97410756051 + 97410756052.

It is an arithmetic number, because the mean of its divisors is an integer number (97410756052).

Almost surely, 2^194821512103 is an apocalyptic number.

194821512103 is a deficient number, since it is larger than the sum of its proper divisors (1).

194821512103 is an equidigital number, since it uses as much as digits as its factorization.

194821512103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 37.

The spelling of 194821512103 in words is "one hundred ninety-four billion, eight hundred twenty-one million, five hundred twelve thousand, one hundred three".