1345810911 has 4 divisors (see below), whose sum is σ = 1794414552. Its totient is φ = 897207272.

The previous prime is 1345810849. The next prime is 1345810913. The reversal of 1345810911 is 1190185431.

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

It is a cyclic number.

It is not a de Polignac number, because 1345810911 - 2⁶ = 1345810847 is a prime.

It is a super-2 number, since 2×1345810911² = 3622414016333299842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345810913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224301816 + ... + 224301821.

It is an arithmetic number, because the mean of its divisors is an integer number (448603638).

Almost surely, 2^1345810911 is an apocalyptic number.

1345810911 is a deficient number, since it is larger than the sum of its proper divisors (448603641).

1345810911 is an equidigital number, since it uses as much as digits as its factorization.

1345810911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448603640.

The product of its (nonzero) digits is 4320, while the sum is 33.

The square root of 1345810911 is about 36685.2955692059. The cubic root of 1345810911 is about 1104.0650995074.

The spelling of 1345810911 in words is "one billion, three hundred forty-five million, eight hundred ten thousand, nine hundred eleven".