148004491 has 4 divisors (see below), whose sum is σ = 149469984. Its totient is φ = 146539000.

The previous prime is 148004453. The next prime is 148004503. The reversal of 148004491 is 194400841.

148004491 is digitally balanced in base 2, 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: 194400841 = 211 ⋅921331.

It is a cyclic number.

It is not a de Polignac number, because 148004491 - 2¹¹ = 148002443 is a prime.

It is a Smith number, since the sum of its digits (31) 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 not an unprimeable number, because it can be changed into a prime (148004401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 732595 + ... + 732796.

It is an arithmetic number, because the mean of its divisors is an integer number (37367496).

Almost surely, 2^148004491 is an apocalyptic number.

148004491 is a deficient number, since it is larger than the sum of its proper divisors (1465493).

148004491 is a wasteful number, since it uses less digits than its factorization.

148004491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465492.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 148004491 is about 12165.7096381592. The cubic root of 148004491 is about 528.9625975464.

It can be divided in two parts, 14800 and 4491, that added together give a palindrome (19291).

The spelling of 148004491 in words is "one hundred forty-eight million, four thousand, four hundred ninety-one".