3111838645 has 4 divisors (see below), whose sum is σ = 3734206380. Its totient is φ = 2489470912.

The previous prime is 3111838637. The next prime is 3111838669. The reversal of 3111838645 is 5468381113.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 365344996 + 2746493649 = 19114^2 + 52407^2 .

It is a cyclic number.

It is not a de Polignac number, because 3111838645 - 2³ = 3111838637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3111838598 and 3111838607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311183860 + ... + 311183869.

It is an arithmetic number, because the mean of its divisors is an integer number (933551595).

Almost surely, 2^3111838645 is an apocalyptic number.

It is an amenable number.

3111838645 is a deficient number, since it is larger than the sum of its proper divisors (622367735).

3111838645 is an equidigital number, since it uses as much as digits as its factorization.

3111838645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622367734.

The product of its digits is 69120, while the sum is 40.

The square root of 3111838645 is about 55783.8564909240. The cubic root of 3111838645 is about 1459.9534990194.

The spelling of 3111838645 in words is "three billion, one hundred eleven million, eight hundred thirty-eight thousand, six hundred forty-five".