148778923 has 8 divisors (see below), whose sum is σ = 152792640. Its totient is φ = 144800640.

The previous prime is 148778921. The next prime is 148778933. The reversal of 148778923 is 329877841.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 148778923 - 2¹ = 148778921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148778921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238 + ... + 17251.

It is an arithmetic number, because the mean of its divisors is an integer number (19099080).

Almost surely, 2^148778923 is an apocalyptic number.

148778923 is a deficient number, since it is larger than the sum of its proper divisors (4013717).

148778923 is a wasteful number, since it uses less digits than its factorization.

148778923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17717.

The product of its digits is 677376, while the sum is 49.

The square root of 148778923 is about 12197.4965874150. The cubic root of 148778923 is about 529.8835901924.

The spelling of 148778923 in words is "one hundred forty-eight million, seven hundred seventy-eight thousand, nine hundred twenty-three".