148980505 has 4 divisors (see below), whose sum is σ = 178776612. Its totient is φ = 119184400.

The previous prime is 148980479. The next prime is 148980523. The reversal of 148980505 is 505089841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 505089841 = 53 ⋅9529997.

It can be written as a sum of positive squares in 2 ways, for example, as 24970009 + 124010496 = 4997^2 + 11136^2 .

It is a de Polignac number, because none of the positive numbers 2^k-148980505 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

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, 14898046 + ... + 14898055.

It is an arithmetic number, because the mean of its divisors is an integer number (44694153).

Almost surely, 2^148980505 is an apocalyptic number.

It is an amenable number.

148980505 is a deficient number, since it is larger than the sum of its proper divisors (29796107).

148980505 is an equidigital number, since it uses as much as digits as its factorization.

148980505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29796106.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 148980505 is about 12205.7570432972. The cubic root of 148980505 is about 530.1227969887.

The spelling of 148980505 in words is "one hundred forty-eight million, nine hundred eighty thousand, five hundred five".