1148151239 has 4 divisors (see below), whose sum is σ = 1148551824. Its totient is φ = 1147750656.

The previous prime is 1148151229. The next prime is 1148151241. The reversal of 1148151239 is 9321518411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9321518411 = 2851 ⋅3269561.

It is a cyclic number.

It is not a de Polignac number, because 1148151239 - 2⁴ = 1148151223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1148151199 and 1148151208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148151229) 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 3 ways as a sum of consecutive naturals, for example, 195962 + ... + 201735.

It is an arithmetic number, because the mean of its divisors is an integer number (287137956).

Almost surely, 2^1148151239 is an apocalyptic number.

1148151239 is a deficient number, since it is larger than the sum of its proper divisors (400585).

1148151239 is an equidigital number, since it uses as much as digits as its factorization.

1148151239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400584.

The product of its digits is 8640, while the sum is 35.

The square root of 1148151239 is about 33884.3804576681. The cubic root of 1148151239 is about 1047.1278237627.

The spelling of 1148151239 in words is "one billion, one hundred forty-eight million, one hundred fifty-one thousand, two hundred thirty-nine".