1248618279 has 16 divisors (see below), whose sum is σ = 1719618560. Its totient is φ = 805049280.

The previous prime is 1248618271. The next prime is 1248618311. The reversal of 1248618279 is 9728168421.

It is a happy number.

It is not a de Polignac number, because 1248618279 - 2³ = 1248618271 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 (1248618271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191064 + ... + 197490.

It is an arithmetic number, because the mean of its divisors is an integer number (107476160).

Almost surely, 2^1248618279 is an apocalyptic number.

1248618279 is a deficient number, since it is larger than the sum of its proper divisors (471000281).

1248618279 is a wasteful number, since it uses less digits than its factorization.

1248618279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8550.

The product of its digits is 387072, while the sum is 48.

The square root of 1248618279 is about 35335.7931706648. The cubic root of 1248618279 is about 1076.8202883270.

The spelling of 1248618279 in words is "one billion, two hundred forty-eight million, six hundred eighteen thousand, two hundred seventy-nine".