1148955287 has 4 divisors (see below), whose sum is σ = 1149024480. Its totient is φ = 1148886096.

The previous prime is 1148955277. The next prime is 1148955293. The reversal of 1148955287 is 7825598411.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7825598411 = 293 ⋅26708527.

It is a cyclic number.

It is not a de Polignac number, because 1148955287 - 2¹⁶ = 1148889751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148955277) 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, 6914 + ... + 48432.

It is an arithmetic number, because the mean of its divisors is an integer number (287256120).

Almost surely, 2^1148955287 is an apocalyptic number.

1148955287 is a deficient number, since it is larger than the sum of its proper divisors (69193).

1148955287 is an equidigital number, since it uses as much as digits as its factorization.

1148955287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69192.

The product of its digits is 806400, while the sum is 50.

The square root of 1148955287 is about 33896.2429629008. The cubic root of 1148955287 is about 1047.3722005614.

The spelling of 1148955287 in words is "one billion, one hundred forty-eight million, nine hundred fifty-five thousand, two hundred eighty-seven".