1345145441 has 4 divisors (see below), whose sum is σ = 1352660400. Its totient is φ = 1337630484.

The previous prime is 1345145419. The next prime is 1345145443. The reversal of 1345145441 is 1445415431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1345145441 - 2¹⁸ = 1344883297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1345145398 and 1345145407.

It is not an unprimeable number, because it can be changed into a prime (1345145443) 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, 3757211 + ... + 3757568.

It is an arithmetic number, because the mean of its divisors is an integer number (338165100).

Almost surely, 2^1345145441 is an apocalyptic number.

It is an amenable number.

1345145441 is a deficient number, since it is larger than the sum of its proper divisors (7514959).

1345145441 is an equidigital number, since it uses as much as digits as its factorization.

1345145441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7514958.

The product of its digits is 19200, while the sum is 32.

The square root of 1345145441 is about 36676.2244649037. The cubic root of 1345145441 is about 1103.8830919337.

The spelling of 1345145441 in words is "one billion, three hundred forty-five million, one hundred forty-five thousand, four hundred forty-one".