194091401443 has 2 divisors, whose sum is σ = 194091401444. Its totient is φ = 194091401442.

The previous prime is 194091401351. The next prime is 194091401473. The reversal of 194091401443 is 344104190491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 194091401443 - 2¹⁷ = 194091270371 is a prime.

It is a super-2 number, since 2×194091401443² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 194091401396 and 194091401405.

It is not a weakly prime, because it can be changed into another prime (194091401473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97045700721 + 97045700722.

It is an arithmetic number, because the mean of its divisors is an integer number (97045700722).

Almost surely, 2^194091401443 is an apocalyptic number.

194091401443 is a deficient number, since it is larger than the sum of its proper divisors (1).

194091401443 is an equidigital number, since it uses as much as digits as its factorization.

194091401443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 194091401443 in words is "one hundred ninety-four billion, ninety-one million, four hundred one thousand, four hundred forty-three".