148754809 has 4 divisors (see below), whose sum is σ = 170005504. Its totient is φ = 127504116.

The previous prime is 148754803. The next prime is 148754821. The reversal of 148754809 is 908457841.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 908457841 = 23 ⋅39498167.

It is a cyclic number.

It is not a de Polignac number, because 148754809 - 2⁷ = 148754681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148754803) 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, 10625337 + ... + 10625350.

It is an arithmetic number, because the mean of its divisors is an integer number (42501376).

Almost surely, 2^148754809 is an apocalyptic number.

It is an amenable number.

148754809 is a deficient number, since it is larger than the sum of its proper divisors (21250695).

148754809 is an equidigital number, since it uses as much as digits as its factorization.

148754809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21250694.

The product of its (nonzero) digits is 322560, while the sum is 46.

The square root of 148754809 is about 12196.5080658359. The cubic root of 148754809 is about 529.8549609057.

The spelling of 148754809 in words is "one hundred forty-eight million, seven hundred fifty-four thousand, eight hundred nine".