1345273407 has 8 divisors (see below), whose sum is σ = 1992997680. Its totient is φ = 896848920.

The previous prime is 1345273387. The next prime is 1345273451. The reversal of 1345273407 is 7043725431.

1345273407 is a `hidden beast` number, since 1 + 345 + 273 + 40 + 7 = 666.

It is not a de Polignac number, because 1345273407 - 2¹² = 1345269311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345273477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24912444 + ... + 24912497.

It is an arithmetic number, because the mean of its divisors is an integer number (249124710).

Almost surely, 2^1345273407 is an apocalyptic number.

1345273407 is a deficient number, since it is larger than the sum of its proper divisors (647724273).

1345273407 is an equidigital number, since it uses as much as digits as its factorization.

1345273407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49824950 (or 49824944 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 1345273407 is about 36677.9689595812. The cubic root of 1345273407 is about 1103.9180955896.

Adding to 1345273407 its reverse (7043725431), we get a palindrome (8388998838).

The spelling of 1345273407 in words is "one billion, three hundred forty-five million, two hundred seventy-three thousand, four hundred seven".