148978594 has 4 divisors (see below), whose sum is σ = 223467894. Its totient is φ = 74489296.

The previous prime is 148978559. The next prime is 148978603. The reversal of 148978594 is 495879841.

It is a happy number.

148978594 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 495879841 = 19 ⋅26098939.

It can be written as a sum of positive squares in only one way, i.e., 148522969 + 455625 = 12187^2 + 675^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 37244647 + ... + 37244650.

Almost surely, 2^148978594 is an apocalyptic number.

148978594 is a deficient number, since it is larger than the sum of its proper divisors (74489300).

148978594 is an equidigital number, since it uses as much as digits as its factorization.

148978594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74489299.

The product of its digits is 2903040, while the sum is 55.

The square root of 148978594 is about 12205.6787603148. The cubic root of 148978594 is about 530.1205303185.

The spelling of 148978594 in words is "one hundred forty-eight million, nine hundred seventy-eight thousand, five hundred ninety-four".