148443481 has 4 divisors (see below), whose sum is σ = 149220864. Its totient is φ = 147666100.

The previous prime is 148443443. The next prime is 148443487. The reversal of 148443481 is 184344841.

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.

It is a cyclic number.

It is not a de Polignac number, because 148443481 - 2¹³ = 148435289 is a prime.

It is a super-2 number, since 2×148443481² = 44070934102794722, 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 148443481.

It is not an unprimeable number, because it can be changed into a prime (148443487) 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, 388405 + ... + 388786.

It is an arithmetic number, because the mean of its divisors is an integer number (37305216).

Almost surely, 2^148443481 is an apocalyptic number.

It is an amenable number.

148443481 is a deficient number, since it is larger than the sum of its proper divisors (777383).

148443481 is an equidigital number, since it uses as much as digits as its factorization.

148443481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777382.

The product of its digits is 49152, while the sum is 37.

The square root of 148443481 is about 12183.7383835997. The cubic root of 148443481 is about 529.4850593640.

The spelling of 148443481 in words is "one hundred forty-eight million, four hundred forty-three thousand, four hundred eighty-one".