148638211 has 4 divisors (see below), whose sum is σ = 153433024. Its totient is φ = 143843400.

The previous prime is 148638179. The next prime is 148638221. The reversal of 148638211 is 112836841.

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

It is a cyclic number.

It is not a de Polignac number, because 148638211 - 2⁵ = 148638179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148638221) 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, 2397360 + ... + 2397421.

It is an arithmetic number, because the mean of its divisors is an integer number (38358256).

Almost surely, 2^148638211 is an apocalyptic number.

148638211 is a deficient number, since it is larger than the sum of its proper divisors (4794813).

148638211 is an equidigital number, since it uses as much as digits as its factorization.

148638211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4794812.

The product of its digits is 9216, while the sum is 34.

The square root of 148638211 is about 12191.7271540992. The cubic root of 148638211 is about 529.7164865537.

The spelling of 148638211 in words is "one hundred forty-eight million, six hundred thirty-eight thousand, two hundred eleven".