345636181 has 16 divisors (see below), whose sum is σ = 392376960. Its totient is φ = 301577920.

The previous prime is 345636103. The next prime is 345636199. The reversal of 345636181 is 181636543.

It is a cyclic number.

It is not a de Polignac number, because 345636181 - 2¹⁷ = 345505109 is a prime.

It is a super-2 number, since 2×345636181² = 238928739232529522, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 345636181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345636281) 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 15 ways as a sum of consecutive naturals, for example, 52056 + ... + 58318.

It is an arithmetic number, because the mean of its divisors is an integer number (24523560).

Almost surely, 2^345636181 is an apocalyptic number.

It is an amenable number.

345636181 is a deficient number, since it is larger than the sum of its proper divisors (46740779).

345636181 is a wasteful number, since it uses less digits than its factorization.

345636181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6476.

The product of its digits is 51840, while the sum is 37.

The square root of 345636181 is about 18591.2931502895. The cubic root of 345636181 is about 701.7887456420.

The spelling of 345636181 in words is "three hundred forty-five million, six hundred thirty-six thousand, one hundred eighty-one".