1189109006 has 4 divisors (see below), whose sum is σ = 1783663512. Its totient is φ = 594554502.

The previous prime is 1189108981. The next prime is 1189109023. The reversal of 1189109006 is 6009019811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6009019811 = 673 ⋅8928707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 297277250 + ... + 297277253.

It is an arithmetic number, because the mean of its divisors is an integer number (445915878).

Almost surely, 2^1189109006 is an apocalyptic number.

1189109006 is a deficient number, since it is larger than the sum of its proper divisors (594554506).

1189109006 is an equidigital number, since it uses as much as digits as its factorization.

1189109006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594554505.

The product of its (nonzero) digits is 3888, while the sum is 35.

The square root of 1189109006 is about 34483.4598902140. The cubic root of 1189109006 is about 1059.4339584965.

The spelling of 1189109006 in words is "one billion, one hundred eighty-nine million, one hundred nine thousand, six".