148918813 has 4 divisors (see below), whose sum is σ = 155393568. Its totient is φ = 142444060.

The previous prime is 148918807. The next prime is 148918829. The reversal of 148918813 is 318819841.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 318819841 = 31 ⋅10284511.

It is not a de Polignac number, because 148918813 - 2¹⁷ = 148787741 is a prime.

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 148918813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148918883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3237343 + ... + 3237388.

It is an arithmetic number, because the mean of its divisors is an integer number (38848392).

Almost surely, 2^148918813 is an apocalyptic number.

It is an amenable number.

148918813 is a deficient number, since it is larger than the sum of its proper divisors (6474755).

148918813 is an equidigital number, since it uses as much as digits as its factorization.

148918813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6474754.

The product of its digits is 55296, while the sum is 43.

The square root of 148918813 is about 12203.2296135081. The cubic root of 148918813 is about 530.0496132504.

It can be divided in two parts, 1489 and 18813, that added together give a palindrome (20302).

The spelling of 148918813 in words is "one hundred forty-eight million, nine hundred eighteen thousand, eight hundred thirteen".