1138486018 has 8 divisors (see below), whose sum is σ = 1717164540. Its totient is φ = 566097840.

The previous prime is 1138486001. The next prime is 1138486021. The reversal of 1138486018 is 8106848311.

It can be written as a sum of positive squares in 2 ways, for example, as 801286249 + 337199769 = 28307^2 + 18363^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1572133 + ... + 1572856.

Almost surely, 2^1138486018 is an apocalyptic number.

1138486018 is a deficient number, since it is larger than the sum of its proper divisors (578678522).

1138486018 is a wasteful number, since it uses less digits than its factorization.

1138486018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3145172.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 1138486018 is about 33741.4584450643. The cubic root of 1138486018 is about 1044.1812739695.

The spelling of 1138486018 in words is "one billion, one hundred thirty-eight million, four hundred eighty-six thousand, eighteen".