118781378 has 4 divisors (see below), whose sum is σ = 178172070. Its totient is φ = 59390688.

The previous prime is 118781339. The next prime is 118781389. The reversal of 118781378 is 873187811.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 114425809 + 4355569 = 10697^2 + 2087^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29695343 + ... + 29695346.

Almost surely, 2^118781378 is an apocalyptic number.

118781378 is a deficient number, since it is larger than the sum of its proper divisors (59390692).

118781378 is an equidigital number, since it uses as much as digits as its factorization.

118781378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59390691.

The product of its digits is 75264, while the sum is 44.

The square root of 118781378 is about 10898.6869851372. The cubic root of 118781378 is about 491.5670751584.

The spelling of 118781378 in words is "one hundred eighteen million, seven hundred eighty-one thousand, three hundred seventy-eight".