1138603123 has 8 divisors (see below), whose sum is σ = 1343237120. Its totient is φ = 944463240.

The previous prime is 1138603117. The next prime is 1138603127. The reversal of 1138603123 is 3213068311.

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

It is not a de Polignac number, because 1138603123 - 2⁵ = 1138603091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1138603091 and 1138603100.

It is not an unprimeable number, because it can be changed into a prime (1138603127) 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, 2623293 + ... + 2623726.

It is an arithmetic number, because the mean of its divisors is an integer number (167904640).

Almost surely, 2^1138603123 is an apocalyptic number.

1138603123 is a deficient number, since it is larger than the sum of its proper divisors (204633997).

1138603123 is an equidigital number, since it uses as much as digits as its factorization.

1138603123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5247057.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1138603123 is about 33743.1937285136. The cubic root of 1138603123 is about 1044.2170743377.

The spelling of 1138603123 in words is "one billion, one hundred thirty-eight million, six hundred three thousand, one hundred twenty-three".