149195305 has 16 divisors (see below), whose sum is σ = 204831360. Its totient is φ = 102195072.

The previous prime is 149195303. The next prime is 149195309. The reversal of 149195305 is 503591941.

It is a happy number.

It is not a de Polignac number, because 149195305 - 2¹ = 149195303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149195303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43462 + ... + 46768.

It is an arithmetic number, because the mean of its divisors is an integer number (12801960).

Almost surely, 2^149195305 is an apocalyptic number.

It is an amenable number.

149195305 is a deficient number, since it is larger than the sum of its proper divisors (55636055).

149195305 is a wasteful number, since it uses less digits than its factorization.

149195305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4608.

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 149195305 is about 12214.5530004172. The cubic root of 149195305 is about 530.3774515479.

The spelling of 149195305 in words is "one hundred forty-nine million, one hundred ninety-five thousand, three hundred five".