1374446509 has 18 divisors (see below), whose sum is σ = 1435136010. Its totient is φ = 1316199456.

The previous prime is 1374446497. The next prime is 1374446519. The reversal of 1374446509 is 9056444731.

It can be written as a sum of positive squares in 3 ways, for example, as 601328484 + 773118025 = 24522^2 + 27805^2 .

It is not a de Polignac number, because 1374446509 - 2²¹ = 1372349357 is a prime.

It is a super-2 number, since 2×1374446509² = 3778206412204574162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1374446519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12609547 + ... + 12609655.

Almost surely, 2^1374446509 is an apocalyptic number.

It is an amenable number.

1374446509 is a deficient number, since it is larger than the sum of its proper divisors (60689501).

1374446509 is an frugal number, since it uses more digits than its factorization.

1374446509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 1374446509 is about 37073.5284131414. The cubic root of 1374446509 is about 1111.8408188398.

The spelling of 1374446509 in words is "one billion, three hundred seventy-four million, four hundred forty-six thousand, five hundred nine".