1189119009 has 32 divisors (see below), whose sum is σ = 1903063680. Its totient is φ = 652465152.

The previous prime is 1189118999. The next prime is 1189119011. The reversal of 1189119009 is 9009119811.

It is not a de Polignac number, because 1189119009 - 2¹¹ = 1189116961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (1189119059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34602 + ... + 59795.

It is an arithmetic number, because the mean of its divisors is an integer number (59470740).

Almost surely, 2^1189119009 is an apocalyptic number.

1189119009 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1189119009 is a deficient number, since it is larger than the sum of its proper divisors (713944671).

1189119009 is a wasteful number, since it uses less digits than its factorization.

1189119009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94449.

The product of its (nonzero) digits is 5832, while the sum is 39.

The square root of 1189119009 is about 34483.6049304593. The cubic root of 1189119009 is about 1059.4369292048.

The spelling of 1189119009 in words is "one billion, one hundred eighty-nine million, one hundred nineteen thousand, nine".