1138874939 has 2 divisors, whose sum is σ = 1138874940. Its totient is φ = 1138874938.

The previous prime is 1138874929. The next prime is 1138874951. The reversal of 1138874939 is 9394788311.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1138874939 is a prime.

It is a super-2 number, since 2×1138874939² = 2594072253364507442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1138874929) by changing a digit.

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, 569437469 + 569437470.

It is an arithmetic number, because the mean of its divisors is an integer number (569437470).

Almost surely, 2^1138874939 is an apocalyptic number.

1138874939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138874939 is an equidigital number, since it uses as much as digits as its factorization.

1138874939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 53.

The square root of 1138874939 is about 33747.2212041229. The cubic root of 1138874939 is about 1044.3001622077.

The spelling of 1138874939 in words is "one billion, one hundred thirty-eight million, eight hundred seventy-four thousand, nine hundred thirty-nine".