194244151 has 2 divisors, whose sum is σ = 194244152. Its totient is φ = 194244150.

The previous prime is 194244137. The next prime is 194244157. The reversal of 194244151 is 151442491.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194244151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194244157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97122075 + 97122076.

It is an arithmetic number, because the mean of its divisors is an integer number (97122076).

Almost surely, 2^194244151 is an apocalyptic number.

194244151 is a deficient number, since it is larger than the sum of its proper divisors (1).

194244151 is an equidigital number, since it uses as much as digits as its factorization.

194244151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 31.

The square root of 194244151 is about 13937.1500314806. The cubic root of 194244151 is about 579.1387842784.

The spelling of 194244151 in words is "one hundred ninety-four million, two hundred forty-four thousand, one hundred fifty-one".