148809785 has 4 divisors (see below), whose sum is σ = 178571748. Its totient is φ = 119047824.

The previous prime is 148809779. The next prime is 148809797. The reversal of 148809785 is 587908841.

148809785 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.

It can be written as a sum of positive squares in 2 ways, for example, as 111746041 + 37063744 = 10571^2 + 6088^2 .

It is a cyclic number.

It is not a de Polignac number, because 148809785 - 2⁴ = 148809769 is a prime.

It is a super-2 number, since 2×148809785² = 44288704223492450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14880974 + ... + 14880983.

It is an arithmetic number, because the mean of its divisors is an integer number (44642937).

Almost surely, 2^148809785 is an apocalyptic number.

It is an amenable number.

148809785 is a deficient number, since it is larger than the sum of its proper divisors (29761963).

148809785 is an equidigital number, since it uses as much as digits as its factorization.

148809785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29761962.

The product of its (nonzero) digits is 645120, while the sum is 50.

The square root of 148809785 is about 12198.7616174758. The cubic root of 148809785 is about 529.9202265125.

The spelling of 148809785 in words is "one hundred forty-eight million, eight hundred nine thousand, seven hundred eighty-five".