1345791 has 4 divisors (see below), whose sum is σ = 1794392. Its totient is φ = 897192.

The previous prime is 1345787. The next prime is 1345811. The reversal of 1345791 is 1975431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1975431 = 3 ⋅658477.

It is not a de Polignac number, because 1345791 - 2² = 1345787 is a prime.

It is a super-2 number, since 2×1345791² = 3622306831362, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345711) 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, 224296 + ... + 224301.

It is an arithmetic number, because the mean of its divisors is an integer number (448598).

2^1345791 is an apocalyptic number.

1345791 is a deficient number, since it is larger than the sum of its proper divisors (448601).

1345791 is an equidigital number, since it uses as much as digits as its factorization.

1345791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448600.

The product of its digits is 3780, while the sum is 30.

The square root of 1345791 is about 1160.0823246649. The cubic root of 1345791 is about 110.4059654674.

The spelling of 1345791 in words is "one million, three hundred forty-five thousand, seven hundred ninety-one".