146416181 has 2 divisors, whose sum is σ = 146416182. Its totient is φ = 146416180.

The previous prime is 146416177. The next prime is 146416187. The reversal of 146416181 is 181614641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108347281 + 38068900 = 10409^2 + 6170^2 .

It is a cyclic number.

It is not a de Polignac number, because 146416181 - 2² = 146416177 is a prime.

It is a super-2 number, since 2×146416181² = 42875396117249522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146416187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73208090 + 73208091.

It is an arithmetic number, because the mean of its divisors is an integer number (73208091).

Almost surely, 2^146416181 is an apocalyptic number.

It is an amenable number.

146416181 is a deficient number, since it is larger than the sum of its proper divisors (1).

146416181 is an equidigital number, since it uses as much as digits as its factorization.

146416181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 32.

The square root of 146416181 is about 12100.2554105275. The cubic root of 146416181 is about 527.0636010937.

The spelling of 146416181 in words is "one hundred forty-six million, four hundred sixteen thousand, one hundred eighty-one".