185918045 has 4 divisors (see below), whose sum is σ = 223101660. Its totient is φ = 148734432.

The previous prime is 185918023. The next prime is 185918053. The reversal of 185918045 is 540819581.

185918045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 52215076 + 133702969 = 7226^2 + 11563^2 .

It is a cyclic number.

It is not a de Polignac number, because 185918045 - 2⁶ = 185917981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 185917993 and 185918011.

It is a congruent 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, 18591800 + ... + 18591809.

It is an arithmetic number, because the mean of its divisors is an integer number (55775415).

Almost surely, 2^185918045 is an apocalyptic number.

It is an amenable number.

185918045 is a deficient number, since it is larger than the sum of its proper divisors (37183615).

185918045 is an equidigital number, since it uses as much as digits as its factorization.

185918045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37183614.

The product of its (nonzero) digits is 57600, while the sum is 41.

The square root of 185918045 is about 13635.1767498628. The cubic root of 185918045 is about 570.7428961220.

The spelling of 185918045 in words is "one hundred eighty-five million, nine hundred eighteen thousand, forty-five".