1338458918 has 16 divisors (see below), whose sum is σ = 2095774560. Its totient is φ = 639889536.

The previous prime is 1338458917. The next prime is 1338458959. The reversal of 1338458918 is 8198548331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338458917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196148 + ... + 202856.

It is an arithmetic number, because the mean of its divisors is an integer number (130985910).

Almost surely, 2^1338458918 is an apocalyptic number.

1338458918 is a deficient number, since it is larger than the sum of its proper divisors (757315642).

1338458918 is a wasteful number, since it uses less digits than its factorization.

1338458918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11071.

The product of its digits is 829440, while the sum is 50.

The square root of 1338458918 is about 36584.9548038535. The cubic root of 1338458918 is about 1102.0509718925.

The spelling of 1338458918 in words is "one billion, three hundred thirty-eight million, four hundred fifty-eight thousand, nine hundred eighteen".