148978593 has 12 divisors (see below), whose sum is σ = 215301840. Its totient is φ = 99268056.

The previous prime is 148978559. The next prime is 148978603. The reversal of 148978593 is 395879841.

148978593 is a `hidden beast` number, since 1 + 48 + 9 + 7 + 8 + 593 = 666.

It is not a de Polignac number, because 148978593 - 2²⁰ = 147930017 is a prime.

Its product of digits (2177280) is a multiple of the sum of its prime divisors (8505).

It is not an unprimeable number, because it can be changed into a prime (148978513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24430 + ... + 29912.

It is an arithmetic number, because the mean of its divisors is an integer number (17941820).

Almost surely, 2^148978593 is an apocalyptic number.

It is an amenable number.

148978593 is a deficient number, since it is larger than the sum of its proper divisors (66323247).

148978593 is a wasteful number, since it uses less digits than its factorization.

148978593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8508 (or 8505 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 148978593 is about 12205.6787193503. The cubic root of 148978593 is about 530.1205291324.

The spelling of 148978593 in words is "one hundred forty-eight million, nine hundred seventy-eight thousand, five hundred ninety-three".