1449009019 has 4 divisors (see below), whose sum is σ = 1449345496. Its totient is φ = 1448672544.

The previous prime is 1449009007. The next prime is 1449009031. The reversal of 1449009019 is 9109009441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9109009441 = 7 ⋅1301287063.

It is an interprime number because it is at equal distance from previous prime (1449009007) and next prime (1449009031).

It is a cyclic number.

It is not a de Polignac number, because 1449009019 - 2⁹ = 1449008507 is a prime.

It is a super-2 number, since 2×1449009019² = 4199254274286684722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1449009319) 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, 161694 + ... + 170419.

It is an arithmetic number, because the mean of its divisors is an integer number (362336374).

Almost surely, 2^1449009019 is an apocalyptic number.

1449009019 is a deficient number, since it is larger than the sum of its proper divisors (336477).

1449009019 is an equidigital number, since it uses as much as digits as its factorization.

1449009019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336476.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 1449009019 is about 38065.8510872935. The cubic root of 1449009019 is about 1131.5932882272.

The spelling of 1449009019 in words is "one billion, four hundred forty-nine million, nine thousand, nineteen".