345865818 has 16 divisors (see below), whose sum is σ = 693112896. Its totient is φ = 115058400.

The previous prime is 345865811. The next prime is 345865823. The reversal of 345865818 is 818568543.

It is not an unprimeable number, because it can be changed into a prime (345865811) 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, 54283 + ... + 60318.

It is an arithmetic number, because the mean of its divisors is an integer number (43319556).

Almost surely, 2^345865818 is an apocalyptic number.

345865818 is an abundant number, since it is smaller than the sum of its proper divisors (347247078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

345865818 is a wasteful number, since it uses less digits than its factorization.

345865818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115109.

The product of its digits is 921600, while the sum is 48.

The square root of 345865818 is about 18597.4680534744. The cubic root of 345865818 is about 701.9441315592.

It can be divided in two parts, 34586 and 5818, that added together give a palindrome (40404).

The spelling of 345865818 in words is "three hundred forty-five million, eight hundred sixty-five thousand, eight hundred eighteen".