148948809 has 16 divisors (see below), whose sum is σ = 209340480. Its totient is φ = 93942720.

The previous prime is 148948799. The next prime is 148948819. The reversal of 148948809 is 908849841.

It is an interprime number because it is at equal distance from previous prime (148948799) and next prime (148948819).

It is not a de Polignac number, because 148948809 - 2¹¹ = 148946761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (148948819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55519 + ... + 58139.

It is an arithmetic number, because the mean of its divisors is an integer number (13083780).

Almost surely, 2^148948809 is an apocalyptic number.

148948809 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

148948809 is a deficient number, since it is larger than the sum of its proper divisors (60391671).

148948809 is a wasteful number, since it uses less digits than its factorization.

148948809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3640.

The product of its (nonzero) digits is 663552, while the sum is 51.

The square root of 148948809 is about 12204.4585705389. The cubic root of 148948809 is about 530.0851993090.

The spelling of 148948809 in words is "one hundred forty-eight million, nine hundred forty-eight thousand, eight hundred nine".