1135838638 has 8 divisors (see below), whose sum is σ = 1858645080. Its totient is φ = 516290280.

The previous prime is 1135838633. The next prime is 1135838651. The reversal of 1135838638 is 8368385311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135838633) 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, 25814493 + ... + 25814536.

It is an arithmetic number, because the mean of its divisors is an integer number (232330635).

Almost surely, 2^1135838638 is an apocalyptic number.

1135838638 is a deficient number, since it is larger than the sum of its proper divisors (722806442).

1135838638 is a wasteful number, since it uses less digits than its factorization.

1135838638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51629042.

The product of its digits is 414720, while the sum is 46.

The square root of 1135838638 is about 33702.2052394202. The cubic root of 1135838638 is about 1043.3712830282.

It can be divided in two parts, 113583 and 8638, that added together give a palindrome (122221).

The spelling of 1135838638 in words is "one billion, one hundred thirty-five million, eight hundred thirty-eight thousand, six hundred thirty-eight".