148018809 has 4 divisors (see below), whose sum is σ = 197358416. Its totient is φ = 98679204.

The previous prime is 148018789. The next prime is 148018811. The reversal of 148018809 is 908810841.

It is a happy number.

148018809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 148018809 - 2¹³ = 148010617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (148018009) 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, 24669799 + ... + 24669804.

It is an arithmetic number, because the mean of its divisors is an integer number (49339604).

Almost surely, 2^148018809 is an apocalyptic number.

It is an amenable number.

148018809 is a deficient number, since it is larger than the sum of its proper divisors (49339607).

148018809 is an equidigital number, since it uses as much as digits as its factorization.

148018809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49339606.

The product of its (nonzero) digits is 18432, while the sum is 39.

The square root of 148018809 is about 12166.2980811749. The cubic root of 148018809 is about 528.9796543312.

The spelling of 148018809 in words is "one hundred forty-eight million, eighteen thousand, eight hundred nine".