185010985 has 4 divisors (see below), whose sum is σ = 222013188. Its totient is φ = 148008784.

The previous prime is 185010979. The next prime is 185011049. The reversal of 185010985 is 589010581.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78570496 + 106440489 = 8864^2 + 10317^2 .

It is a cyclic number.

It is not a de Polignac number, because 185010985 - 2⁵ = 185010953 is a prime.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18501094 + ... + 18501103.

It is an arithmetic number, because the mean of its divisors is an integer number (55503297).

Almost surely, 2^185010985 is an apocalyptic number.

It is an amenable number.

185010985 is a deficient number, since it is larger than the sum of its proper divisors (37002203).

185010985 is an equidigital number, since it uses as much as digits as its factorization.

185010985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37002202.

The product of its (nonzero) digits is 14400, while the sum is 37.

The square root of 185010985 is about 13601.8743193723. The cubic root of 185010985 is about 569.8131992787.

The spelling of 185010985 in words is "one hundred eighty-five million, ten thousand, nine hundred eighty-five".