185220342007 has 8 divisors (see below), whose sum is σ = 197639587760. Its totient is φ = 173068176960.

The previous prime is 185220342001. The next prime is 185220342011. The reversal of 185220342007 is 700243022581.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-185220342007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185220342001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66768744 + ... + 66771517.

It is an arithmetic number, because the mean of its divisors is an integer number (24704948470).

Almost surely, 2^185220342007 is an apocalyptic number.

185220342007 is a deficient number, since it is larger than the sum of its proper divisors (12419245753).

185220342007 is a wasteful number, since it uses less digits than its factorization.

185220342007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133540353.

The product of its (nonzero) digits is 26880, while the sum is 34.

Adding to 185220342007 its reverse (700243022581), we get a palindrome (885463364588).

The spelling of 185220342007 in words is "one hundred eighty-five billion, two hundred twenty million, three hundred forty-two thousand, seven".