818351145 has 24 divisors (see below), whose sum is σ = 1467390600. Its totient is φ = 421403136.

The previous prime is 818351143. The next prime is 818351159. The reversal of 818351145 is 541153818.

It can be written as a sum of positive squares in 4 ways, for example, as 38601369 + 779749776 = 6213^2 + 27924^2 .

It is not a de Polignac number, because 818351145 - 2¹ = 818351143 is a prime.

It is a super-2 number, since 2×818351145² = 1339397193045622050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (818351141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 312240 + ... + 314849.

It is an arithmetic number, because the mean of its divisors is an integer number (61141275).

Almost surely, 2^818351145 is an apocalyptic number.

It is an amenable number.

818351145 is a deficient number, since it is larger than the sum of its proper divisors (649039455).

818351145 is a wasteful number, since it uses less digits than its factorization.

818351145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627129 (or 627126 counting only the distinct ones).

The product of its digits is 19200, while the sum is 36.

The square root of 818351145 is about 28606.8373819966. The cubic root of 818351145 is about 935.3623787181.

The spelling of 818351145 in words is "eight hundred eighteen million, three hundred fifty-one thousand, one hundred forty-five".