148815187 has 4 divisors (see below), whose sum is σ = 148868280. Its totient is φ = 148762096.

The previous prime is 148815157. The next prime is 148815253. The reversal of 148815187 is 781518841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 781518841 = 349 ⋅2239309.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-148815187 is a prime.

It is a super-3 number, since 3×148815187³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148815137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22093 + ... + 28030.

It is an arithmetic number, because the mean of its divisors is an integer number (37217070).

Almost surely, 2^148815187 is an apocalyptic number.

148815187 is a deficient number, since it is larger than the sum of its proper divisors (53093).

148815187 is an equidigital number, since it uses as much as digits as its factorization.

148815187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53092.

The product of its digits is 71680, while the sum is 43.

The square root of 148815187 is about 12198.9830313842. The cubic root of 148815187 is about 529.9266387127.

The spelling of 148815187 in words is "one hundred forty-eight million, eight hundred fifteen thousand, one hundred eighty-seven".