1189338123 has 8 divisors (see below), whose sum is σ = 1586899600. Its totient is φ = 792334368.

The previous prime is 1189338097. The next prime is 1189338181. The reversal of 1189338123 is 3218339811.

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

It is not a de Polignac number, because 1189338123 - 2¹⁷ = 1189207051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1189338023) 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, 134428 + ... + 143001.

It is an arithmetic number, because the mean of its divisors is an integer number (198362450).

Almost surely, 2^1189338123 is an apocalyptic number.

1189338123 is a deficient number, since it is larger than the sum of its proper divisors (397561477).

1189338123 is a wasteful number, since it uses less digits than its factorization.

1189338123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278861.

The product of its digits is 31104, while the sum is 39.

The square root of 1189338123 is about 34486.7818591413. The cubic root of 1189338123 is about 1059.5019978830.

The spelling of 1189338123 in words is "one billion, one hundred eighty-nine million, three hundred thirty-eight thousand, one hundred twenty-three".