118278863 has 2 divisors, whose sum is σ = 118278864. Its totient is φ = 118278862.

The previous prime is 118278859. The next prime is 118278883. The reversal of 118278863 is 368872811.

It is a weak prime.

It is an emirp because it is prime and its reverse (368872811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118278863 - 2² = 118278859 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118278803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59139431 + 59139432.

It is an arithmetic number, because the mean of its divisors is an integer number (59139432).

Almost surely, 2^118278863 is an apocalyptic number.

118278863 is a deficient number, since it is larger than the sum of its proper divisors (1).

118278863 is an equidigital number, since it uses as much as digits as its factorization.

118278863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 44.

The square root of 118278863 is about 10875.6086266471. The cubic root of 118278863 is about 490.8728894751.

The spelling of 118278863 in words is "one hundred eighteen million, two hundred seventy-eight thousand, eight hundred sixty-three".