1138340499 has 4 divisors (see below), whose sum is σ = 1517787336. Its totient is φ = 758893664.

The previous prime is 1138340479. The next prime is 1138340507. The reversal of 1138340499 is 9940438311.

1138340499 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1138340499 - 2²¹ = 1136243347 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1138340499.

It is not an unprimeable number, because it can be changed into a prime (1138340479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189723414 + ... + 189723419.

It is an arithmetic number, because the mean of its divisors is an integer number (379446834).

Almost surely, 2^1138340499 is an apocalyptic number.

1138340499 is a deficient number, since it is larger than the sum of its proper divisors (379446837).

1138340499 is an equidigital number, since it uses as much as digits as its factorization.

1138340499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379446836.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 1138340499 is about 33739.3019933727. The cubic root of 1138340499 is about 1044.1367836883.

The spelling of 1138340499 in words is "one billion, one hundred thirty-eight million, three hundred forty thousand, four hundred ninety-nine".