1346611645 has 4 divisors (see below), whose sum is σ = 1615933980. Its totient is φ = 1077289312.

The previous prime is 1346611639. The next prime is 1346611649. The reversal of 1346611645 is 5461166431.

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 850480569 + 496131076 = 29163^2 + 22274^2 .

It is a cyclic number.

It is not a de Polignac number, because 1346611645 - 2⁷ = 1346611517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1346611649) 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, 134661160 + ... + 134661169.

It is an arithmetic number, because the mean of its divisors is an integer number (403983495).

Almost surely, 2^1346611645 is an apocalyptic number.

It is an amenable number.

1346611645 is a deficient number, since it is larger than the sum of its proper divisors (269322335).

1346611645 is an equidigital number, since it uses as much as digits as its factorization.

1346611645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269322334.

The product of its digits is 51840, while the sum is 37.

The square root of 1346611645 is about 36696.2075015934. The cubic root of 1346611645 is about 1104.2840225820.

The spelling of 1346611645 in words is "one billion, three hundred forty-six million, six hundred eleven thousand, six hundred forty-five".