1346449637 has 4 divisors (see below), whose sum is σ = 1450022700. Its totient is φ = 1242876576.

The previous prime is 1346449631. The next prime is 1346449651. The reversal of 1346449637 is 7369446431.

It is a Cunningham number, because it is equal to 36694²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7369446431 = 151 ⋅48804281.

It can be written as a sum of positive squares in 2 ways, for example, as 199204996 + 1147244641 = 14114^2 + 33871^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1346449637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1346449591 and 1346449600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1346449631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51786512 + ... + 51786537.

It is an arithmetic number, because the mean of its divisors is an integer number (362505675).

Almost surely, 2^1346449637 is an apocalyptic number.

It is an amenable number.

1346449637 is a deficient number, since it is larger than the sum of its proper divisors (103573063).

1346449637 is a wasteful number, since it uses less digits than its factorization.

1346449637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103573062.

The product of its digits is 1306368, while the sum is 47.

The square root of 1346449637 is about 36694.0000136262. Note that the first 4 decimals coincide. The cubic root of 1346449637 is about 1104.2397361139.

The spelling of 1346449637 in words is "one billion, three hundred forty-six million, four hundred forty-nine thousand, six hundred thirty-seven".