1346681738 has 4 divisors (see below), whose sum is σ = 2020022610. Its totient is φ = 673340868.

The previous prime is 1346681719. The next prime is 1346681761. The reversal of 1346681738 is 8371866431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8371866431 = 19 ⋅440624549.

It can be written as a sum of positive squares in only one way, i.e., 766016329 + 580665409 = 27677^2 + 24097^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1346681692 and 1346681701.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 336670433 + ... + 336670436.

Almost surely, 2^1346681738 is an apocalyptic number.

1346681738 is a deficient number, since it is larger than the sum of its proper divisors (673340872).

1346681738 is an equidigital number, since it uses as much as digits as its factorization.

1346681738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673340871.

The product of its digits is 580608, while the sum is 47.

The square root of 1346681738 is about 36697.1625333622. The cubic root of 1346681738 is about 1104.3031820869.

The spelling of 1346681738 in words is "one billion, three hundred forty-six million, six hundred eighty-one thousand, seven hundred thirty-eight".