194990183 has 2 divisors, whose sum is σ = 194990184. Its totient is φ = 194990182.

The previous prime is 194990149. The next prime is 194990197. The reversal of 194990183 is 381099491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 194990183 - 2²⁴ = 178212967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194990083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97495091 + 97495092.

It is an arithmetic number, because the mean of its divisors is an integer number (97495092).

Almost surely, 2^194990183 is an apocalyptic number.

194990183 is a deficient number, since it is larger than the sum of its proper divisors (1).

194990183 is an equidigital number, since it uses as much as digits as its factorization.

194990183 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 194990183 is about 13963.8885343589. Note that the first 3 decimals coincide. The cubic root of 194990183 is about 579.8792683703.

The spelling of 194990183 in words is "one hundred ninety-four million, nine hundred ninety thousand, one hundred eighty-three".