185238145 has 16 divisors (see below), whose sum is σ = 224352000. Its totient is φ = 146821248.

The previous prime is 185238121. The next prime is 185238149. The reversal of 185238145 is 541832581.

It is a cyclic number.

It is not a de Polignac number, because 185238145 - 2¹³ = 185229953 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (185238149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452701 + ... + 453109.

It is an arithmetic number, because the mean of its divisors is an integer number (14022000).

Almost surely, 2^185238145 is an apocalyptic number.

It is an amenable number.

185238145 is a deficient number, since it is larger than the sum of its proper divisors (39113855).

185238145 is a wasteful number, since it uses less digits than its factorization.

185238145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032.

The product of its digits is 38400, while the sum is 37.

The square root of 185238145 is about 13610.2220775416. Note that the first 3 decimals coincide. The cubic root of 185238145 is about 570.0463130523.

The spelling of 185238145 in words is "one hundred eighty-five million, two hundred thirty-eight thousand, one hundred forty-five".