194290159 has 4 divisors (see below), whose sum is σ = 222045904. Its totient is φ = 166534416.

The previous prime is 194290153. The next prime is 194290163. The reversal of 194290159 is 951092491.

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 194290159 - 2¹⁵ = 194257391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194290153) 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, 13877862 + ... + 13877875.

It is an arithmetic number, because the mean of its divisors is an integer number (55511476).

Almost surely, 2^194290159 is an apocalyptic number.

194290159 is a deficient number, since it is larger than the sum of its proper divisors (27755745).

194290159 is an equidigital number, since it uses as much as digits as its factorization.

194290159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27755744.

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 194290159 is about 13938.8004864120. The cubic root of 194290159 is about 579.1845049409.

The spelling of 194290159 in words is "one hundred ninety-four million, two hundred ninety thousand, one hundred fifty-nine".