148169785 has 4 divisors (see below), whose sum is σ = 177803748. Its totient is φ = 118535824.

The previous prime is 148169783. The next prime is 148169789. The reversal of 148169785 is 587961841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 587961841 = 31 ⋅18966511.

It can be written as a sum of positive squares in 2 ways, for example, as 49505296 + 98664489 = 7036^2 + 9933^2 .

It is a cyclic number.

It is not a de Polignac number, because 148169785 - 2¹ = 148169783 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148169783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14816974 + ... + 14816983.

It is an arithmetic number, because the mean of its divisors is an integer number (44450937).

Almost surely, 2^148169785 is an apocalyptic number.

It is an amenable number.

148169785 is a deficient number, since it is larger than the sum of its proper divisors (29633963).

148169785 is an equidigital number, since it uses as much as digits as its factorization.

148169785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29633962.

The product of its digits is 483840, while the sum is 49.

The square root of 148169785 is about 12172.5011809406. The cubic root of 148169785 is about 529.1594425065.

The spelling of 148169785 in words is "one hundred forty-eight million, one hundred sixty-nine thousand, seven hundred eighty-five".