1338958018 has 16 divisors (see below), whose sum is σ = 2114315136. Its totient is φ = 634701760.

The previous prime is 1338958013. The next prime is 1338958021. The reversal of 1338958018 is 8108598331.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (1338958013) 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, 123598 + ... + 133993.

It is an arithmetic number, because the mean of its divisors is an integer number (132144696).

Almost surely, 2^1338958018 is an apocalyptic number.

1338958018 is a deficient number, since it is larger than the sum of its proper divisors (775357118).

1338958018 is a wasteful number, since it uses less digits than its factorization.

1338958018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257729.

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 1338958018 is about 36591.7752780594. The cubic root of 1338958018 is about 1102.1879366956.

The spelling of 1338958018 in words is "one billion, three hundred thirty-eight million, nine hundred fifty-eight thousand, eighteen".