148636405 has 4 divisors (see below), whose sum is σ = 178363692. Its totient is φ = 118909120.

The previous prime is 148636393. The next prime is 148636417. The reversal of 148636405 is 504636841.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (148636393) and next prime (148636417).

It can be written as a sum of positive squares in 2 ways, for example, as 35724529 + 112911876 = 5977^2 + 10626^2 .

It is not a de Polignac number, because 148636405 - 2¹³ = 148628213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 14863636 + ... + 14863645.

It is an arithmetic number, because the mean of its divisors is an integer number (44590923).

Almost surely, 2^148636405 is an apocalyptic number.

It is an amenable number.

148636405 is a deficient number, since it is larger than the sum of its proper divisors (29727287).

148636405 is an equidigital number, since it uses as much as digits as its factorization.

148636405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29727286.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 148636405 is about 12191.6530872561. The cubic root of 148636405 is about 529.7143411389.

The spelling of 148636405 in words is "one hundred forty-eight million, six hundred thirty-six thousand, four hundred five".