185290149 has 24 divisors (see below), whose sum is σ = 274328352. Its totient is φ = 110325280.

The previous prime is 185290141. The next prime is 185290153. The reversal of 185290149 is 941092581.

185290149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 185290149 - 2³ = 185290141 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185290141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114067 + ... + 115679.

It is an arithmetic number, because the mean of its divisors is an integer number (11430348).

Almost surely, 2^185290149 is an apocalyptic number.

It is an amenable number.

185290149 is a deficient number, since it is larger than the sum of its proper divisors (89038203).

185290149 is a wasteful number, since it uses less digits than its factorization.

185290149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745 (or 1686 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 185290149 is about 13612.1324192795. The cubic root of 185290149 is about 570.0996532445.

The spelling of 185290149 in words is "one hundred eighty-five million, two hundred ninety thousand, one hundred forty-nine".