810440151 has 4 divisors (see below), whose sum is σ = 1080586872. Its totient is φ = 540293432.

The previous prime is 810440143. The next prime is 810440171. The reversal of 810440151 is 151044018.

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

It is a cyclic number.

It is not a de Polignac number, because 810440151 - 2³ = 810440143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810440131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135073356 + ... + 135073361.

It is an arithmetic number, because the mean of its divisors is an integer number (270146718).

Almost surely, 2^810440151 is an apocalyptic number.

810440151 is a deficient number, since it is larger than the sum of its proper divisors (270146721).

810440151 is a wasteful number, since it uses less digits than its factorization.

810440151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270146720.

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 810440151 is about 28468.2305561832. The cubic root of 810440151 is about 932.3385670755.

Adding to 810440151 its reverse (151044018), we get a palindrome (961484169).

The spelling of 810440151 in words is "eight hundred ten million, four hundred forty thousand, one hundred fifty-one".