148138445 has 32 divisors (see below), whose sum is σ = 222953472. Its totient is φ = 91982592.

The previous prime is 148138433. The next prime is 148138451. The reversal of 148138445 is 544831841.

148138445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 148138445 - 2¹⁰ = 148137421 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 148138399 and 148138408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21044 + ... + 27186.

It is an arithmetic number, because the mean of its divisors is an integer number (6967296).

Almost surely, 2^148138445 is an apocalyptic number.

It is an amenable number.

148138445 is a deficient number, since it is larger than the sum of its proper divisors (74815027).

148138445 is a wasteful number, since it uses less digits than its factorization.

148138445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6221.

The product of its digits is 61440, while the sum is 38.

The square root of 148138445 is about 12171.2137849929. The cubic root of 148138445 is about 529.1221316465.

The spelling of 148138445 in words is "one hundred forty-eight million, one hundred thirty-eight thousand, four hundred forty-five".