1138876279 has 2 divisors, whose sum is σ = 1138876280. Its totient is φ = 1138876278.

The previous prime is 1138876261. The next prime is 1138876301. The reversal of 1138876279 is 9726788311.

It is a weak prime.

It is an emirp because it is prime and its reverse (9726788311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1138876279 - 2⁹ = 1138875767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1138876379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569438139 + 569438140.

It is an arithmetic number, because the mean of its divisors is an integer number (569438140).

Almost surely, 2^1138876279 is an apocalyptic number.

1138876279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138876279 is an equidigital number, since it uses as much as digits as its factorization.

1138876279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 52.

The square root of 1138876279 is about 33747.2410576035. The cubic root of 1138876279 is about 1044.3005717820.

The spelling of 1138876279 in words is "one billion, one hundred thirty-eight million, eight hundred seventy-six thousand, two hundred seventy-nine".