1345653427 has 4 divisors (see below), whose sum is σ = 1345910256. Its totient is φ = 1345396600.

The previous prime is 1345653391. The next prime is 1345653451. The reversal of 1345653427 is 7243565431.

It is a happy number.

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 1345653427 - 2⁷ = 1345653299 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1345653427.

It is not an unprimeable number, because it can be changed into a prime (1345653467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120388 + ... + 131089.

It is an arithmetic number, because the mean of its divisors is an integer number (336477564).

Almost surely, 2^1345653427 is an apocalyptic number.

1345653427 is a deficient number, since it is larger than the sum of its proper divisors (256829).

1345653427 is an equidigital number, since it uses as much as digits as its factorization.

1345653427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256828.

The product of its digits is 302400, while the sum is 40.

The square root of 1345653427 is about 36683.1490878305. The cubic root of 1345653427 is about 1104.0220326919.

The spelling of 1345653427 in words is "one billion, three hundred forty-five million, six hundred fifty-three thousand, four hundred twenty-seven".