1148279865 has 8 divisors (see below), whose sum is σ = 1837247808. Its totient is φ = 612415920.

The previous prime is 1148279857. The next prime is 1148279887. The reversal of 1148279865 is 5689728411.

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

It is not a de Polignac number, because 1148279865 - 2³ = 1148279857 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38275981 + ... + 38276010.

It is an arithmetic number, because the mean of its divisors is an integer number (229655976).

Almost surely, 2^1148279865 is an apocalyptic number.

1148279865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1148279865 is a deficient number, since it is larger than the sum of its proper divisors (688967943).

1148279865 is an equidigital number, since it uses as much as digits as its factorization.

1148279865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76551999.

The product of its digits is 967680, while the sum is 51.

The square root of 1148279865 is about 33886.2784176722. The cubic root of 1148279865 is about 1047.1669251254.

The spelling of 1148279865 in words is "one billion, one hundred forty-eight million, two hundred seventy-nine thousand, eight hundred sixty-five".