1138237418 has 4 divisors (see below), whose sum is σ = 1707356130. Its totient is φ = 569118708.

The previous prime is 1138237357. The next prime is 1138237421. The reversal of 1138237418 is 8147328311.

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., 816644929 + 321592489 = 28577^2 + 17933^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 284559353 + ... + 284559356.

Almost surely, 2^1138237418 is an apocalyptic number.

1138237418 is a deficient number, since it is larger than the sum of its proper divisors (569118712).

1138237418 is an equidigital number, since it uses as much as digits as its factorization.

1138237418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569118711.

The product of its digits is 32256, while the sum is 38.

The square root of 1138237418 is about 33737.7743486437. The cubic root of 1138237418 is about 1044.1052659035.

The spelling of 1138237418 in words is "one billion, one hundred thirty-eight million, two hundred thirty-seven thousand, four hundred eighteen".