148169281 has 8 divisors (see below), whose sum is σ = 159672744. Its totient is φ = 136680960.

The previous prime is 148169269. The next prime is 148169303. The reversal of 148169281 is 182961841.

It can be written as a sum of positive squares in 4 ways, for example, as 36000000 + 112169281 = 6000^2 + 10591^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 148169281 - 2¹¹ = 148167233 is a prime.

It is a super-2 number, since 2×148169281² = 43908271664113922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148169251) 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 7 ways as a sum of consecutive naturals, for example, 24315 + ... + 29791.

It is an arithmetic number, because the mean of its divisors is an integer number (19959093).

Almost surely, 2^148169281 is an apocalyptic number.

It is an amenable number.

148169281 is a deficient number, since it is larger than the sum of its proper divisors (11503463).

148169281 is a wasteful number, since it uses less digits than its factorization.

148169281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7571.

The product of its digits is 27648, while the sum is 40.

The square root of 148169281 is about 12172.4804785220. The cubic root of 148169281 is about 529.1588425266.

The spelling of 148169281 in words is "one hundred forty-eight million, one hundred sixty-nine thousand, two hundred eighty-one".