194091383 has 2 divisors, whose sum is σ = 194091384. Its totient is φ = 194091382.

The previous prime is 194091367. The next prime is 194091409. The reversal of 194091383 is 383190491.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 194091383 - 2⁴ = 194091367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194091343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97045691 + 97045692.

It is an arithmetic number, because the mean of its divisors is an integer number (97045692).

Almost surely, 2^194091383 is an apocalyptic number.

194091383 is a deficient number, since it is larger than the sum of its proper divisors (1).

194091383 is an equidigital number, since it uses as much as digits as its factorization.

194091383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 194091383 is about 13931.6683494835. The cubic root of 194091383 is about 578.9869185678.

The spelling of 194091383 in words is "one hundred ninety-four million, ninety-one thousand, three hundred eighty-three".