1855008213 has 8 divisors (see below), whose sum is σ = 2580881088. Its totient is φ = 1182903744.

The previous prime is 1855008161. The next prime is 1855008307. The reversal of 1855008213 is 3128005581.

It is a happy number.

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

It is not a de Polignac number, because 1855008213 - 2⁹ = 1855007701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1855007213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13442020 + ... + 13442157.

It is an arithmetic number, because the mean of its divisors is an integer number (322610136).

Almost surely, 2^1855008213 is an apocalyptic number.

It is an amenable number.

1855008213 is a deficient number, since it is larger than the sum of its proper divisors (725872875).

1855008213 is a wasteful number, since it uses less digits than its factorization.

1855008213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26884203.

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 1855008213 is about 43069.8062800380. The cubic root of 1855008213 is about 1228.7077915672.

The spelling of 1855008213 in words is "one billion, eight hundred fifty-five million, eight thousand, two hundred thirteen".