816270145 has 16 divisors (see below), whose sum is σ = 1012073472. Its totient is φ = 631356480.

The previous prime is 816270137. The next prime is 816270149. The reversal of 816270145 is 541072618.

It is not a de Polignac number, because 816270145 - 2³ = 816270137 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 816270145.

It is not an unprimeable number, because it can be changed into a prime (816270149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237459 + ... + 240871.

It is an arithmetic number, because the mean of its divisors is an integer number (63254592).

Almost surely, 2^816270145 is an apocalyptic number.

It is an amenable number.

816270145 is a deficient number, since it is larger than the sum of its proper divisors (195803327).

816270145 is a wasteful number, since it uses less digits than its factorization.

816270145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4992.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 816270145 is about 28570.4418061744. The cubic root of 816270145 is about 934.5688557185.

The spelling of 816270145 in words is "eight hundred sixteen million, two hundred seventy thousand, one hundred forty-five".