810153655 has 4 divisors (see below), whose sum is σ = 972184392. Its totient is φ = 648122920.

The previous prime is 810153653. The next prime is 810153661. The reversal of 810153655 is 556351018.

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

It is not a de Polignac number, because 810153655 - 2¹ = 810153653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 810153655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810153653) 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 3 ways as a sum of consecutive naturals, for example, 81015361 + ... + 81015370.

It is an arithmetic number, because the mean of its divisors is an integer number (243046098).

Almost surely, 2^810153655 is an apocalyptic number.

810153655 is a deficient number, since it is larger than the sum of its proper divisors (162030737).

810153655 is a wasteful number, since it uses less digits than its factorization.

810153655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162030736.

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 810153655 is about 28463.1982566963. The cubic root of 810153655 is about 932.2286914928.

The spelling of 810153655 in words is "eight hundred ten million, one hundred fifty-three thousand, six hundred fifty-five".