148218503 has 4 divisors (see below), whose sum is σ = 148275888. Its totient is φ = 148161120.

The previous prime is 148218493. The next prime is 148218541. The reversal of 148218503 is 305812841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 305812841 = 73 ⋅4189217.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-148218503 is a prime.

It is a super-2 number, since 2×148218503² = 43937449263122018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 148218503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108218503) 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, 24626 + ... + 30047.

It is an arithmetic number, because the mean of its divisors is an integer number (37068972).

Almost surely, 2^148218503 is an apocalyptic number.

148218503 is a deficient number, since it is larger than the sum of its proper divisors (57385).

148218503 is an equidigital number, since it uses as much as digits as its factorization.

148218503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57384.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 148218503 is about 12174.5021664132. The cubic root of 148218503 is about 529.2174317580.

The spelling of 148218503 in words is "one hundred forty-eight million, two hundred eighteen thousand, five hundred three".