148185451 has 4 divisors (see below), whose sum is σ = 148278600. Its totient is φ = 148092304.

The previous prime is 148185431. The next prime is 148185463. The reversal of 148185451 is 154581841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154581841 = 31 ⋅4986511.

It is a cyclic number.

It is not a de Polignac number, because 148185451 - 2¹³ = 148177259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 148185451.

It is not an unprimeable number, because it can be changed into a prime (148185421) 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 3 ways as a sum of consecutive naturals, for example, 44146 + ... + 47383.

It is an arithmetic number, because the mean of its divisors is an integer number (37069650).

Almost surely, 2^148185451 is an apocalyptic number.

148185451 is a deficient number, since it is larger than the sum of its proper divisors (93149).

148185451 is an equidigital number, since it uses as much as digits as its factorization.

148185451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93148.

The product of its digits is 25600, while the sum is 37.

The square root of 148185451 is about 12173.1446635617. The cubic root of 148185451 is about 529.1780912022.

The spelling of 148185451 in words is "one hundred forty-eight million, one hundred eighty-five thousand, four hundred fifty-one".