1448423509 has 16 divisors (see below), whose sum is σ = 1637475840. Its totient is φ = 1271926080.

The previous prime is 1448423489. The next prime is 1448423519. The reversal of 1448423509 is 9053248441.

It is a cyclic number.

It is not a de Polignac number, because 1448423509 - 2¹⁷ = 1448292437 is a prime.

It is a super-2 number, since 2×1448423509² = 4195861322847746162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1448423519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6682 + ... + 54235.

It is an arithmetic number, because the mean of its divisors is an integer number (102342240).

Almost surely, 2^1448423509 is an apocalyptic number.

It is an amenable number.

1448423509 is a deficient number, since it is larger than the sum of its proper divisors (189052331).

1448423509 is a wasteful number, since it uses less digits than its factorization.

1448423509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61020.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 1448423509 is about 38058.1595587595. The cubic root of 1448423509 is about 1131.4408510698.

The spelling of 1448423509 in words is "one billion, four hundred forty-eight million, four hundred twenty-three thousand, five hundred nine".