148778879 has 2 divisors, whose sum is σ = 148778880. Its totient is φ = 148778878.

The previous prime is 148778831. The next prime is 148778921. The reversal of 148778879 is 978877841.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 148778879 - 2¹⁶ = 148713343 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148778779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74389439 + 74389440.

It is an arithmetic number, because the mean of its divisors is an integer number (74389440).

Almost surely, 2^148778879 is an apocalyptic number.

148778879 is a deficient number, since it is larger than the sum of its proper divisors (1).

148778879 is an equidigital number, since it uses as much as digits as its factorization.

148778879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6322176, while the sum is 59.

The square root of 148778879 is about 12197.4947837661. The cubic root of 148778879 is about 529.8835379563.

The spelling of 148778879 in words is "one hundred forty-eight million, seven hundred seventy-eight thousand, eight hundred seventy-nine".