1345441481 has 4 divisors (see below), whose sum is σ = 1345692612. Its totient is φ = 1345190352.

The previous prime is 1345441463. The next prime is 1345441501. The reversal of 1345441481 is 1841445431.

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 828288400 + 517153081 = 28780^2 + 22741^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345441481 - 2³⁰ = 271699657 is a prime.

It is a super-2 number, since 2×1345441481² = 3620425557590946722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345441441) 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, 117350 + ... + 128303.

It is an arithmetic number, because the mean of its divisors is an integer number (336423153).

Almost surely, 2^1345441481 is an apocalyptic number.

It is an amenable number.

1345441481 is a deficient number, since it is larger than the sum of its proper divisors (251131).

1345441481 is an equidigital number, since it uses as much as digits as its factorization.

1345441481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251130.

The product of its digits is 30720, while the sum is 35.

The square root of 1345441481 is about 36680.2600999502. The cubic root of 1345441481 is about 1103.9640669643.

The spelling of 1345441481 in words is "one billion, three hundred forty-five million, four hundred forty-one thousand, four hundred eighty-one".