148231885 has 4 divisors (see below), whose sum is σ = 177878268. Its totient is φ = 118585504.

The previous prime is 148231873. The next prime is 148231949. The reversal of 148231885 is 588132841.

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 63186601 + 85045284 = 7949^2 + 9222^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-148231885 is a prime.

It is a Duffinian number.

It is a congruent 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, 14823184 + ... + 14823193.

It is an arithmetic number, because the mean of its divisors is an integer number (44469567).

Almost surely, 2^148231885 is an apocalyptic number.

It is an amenable number.

148231885 is a deficient number, since it is larger than the sum of its proper divisors (29646383).

148231885 is an equidigital number, since it uses as much as digits as its factorization.

148231885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29646382.

The product of its digits is 61440, while the sum is 40.

The square root of 148231885 is about 12175.0517452699. The cubic root of 148231885 is about 529.2333581874.

The spelling of 148231885 in words is "one hundred forty-eight million, two hundred thirty-one thousand, eight hundred eighty-five".