48081809 has 4 divisors (see below), whose sum is σ = 48123504. Its totient is φ = 48040116.

The previous prime is 48081779. The next prime is 48081821. The reversal of 48081809 is 90818084.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 48081809 - 2¹² = 48077713 is a prime.

It is a super-3 number, since 3×48081809³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48081409) 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, 19067 + ... + 21440.

It is an arithmetic number, because the mean of its divisors is an integer number (12030876).

Almost surely, 2^48081809 is an apocalyptic number.

It is an amenable number.

48081809 is a deficient number, since it is larger than the sum of its proper divisors (41695).

48081809 is a wasteful number, since it uses less digits than its factorization.

48081809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41694.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 48081809 is about 6934.1047727879. The cubic root of 48081809 is about 363.6304691829.

The spelling of 48081809 in words is "forty-eight million, eighty-one thousand, eight hundred nine".