148845481 has 4 divisors (see below), whose sum is σ = 149677200. Its totient is φ = 148013764.

The previous prime is 148845479. The next prime is 148845491. The reversal of 148845481 is 184548841.

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: 184548841 = 317 ⋅582173.

It is a cyclic number.

It is not a de Polignac number, because 148845481 - 2¹ = 148845479 is a prime.

It is a super-2 number, since 2×148845481² = 44309954428242722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148845451) 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, 415591 + ... + 415948.

It is an arithmetic number, because the mean of its divisors is an integer number (37419300).

Almost surely, 2^148845481 is an apocalyptic number.

It is an amenable number.

148845481 is a deficient number, since it is larger than the sum of its proper divisors (831719).

148845481 is an equidigital number, since it uses as much as digits as its factorization.

148845481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831718.

The product of its digits is 163840, while the sum is 43.

The square root of 148845481 is about 12200.2246290796. The cubic root of 148845481 is about 529.9625949631.

The spelling of 148845481 in words is "one hundred forty-eight million, eight hundred forty-five thousand, four hundred eighty-one".