1189907983 has 8 divisors (see below), whose sum is σ = 1309991760. Its totient is φ = 1071809280.

The previous prime is 1189907981. The next prime is 1189908011. The reversal of 1189907983 is 3897099811.

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

It is a cyclic number.

It is not a de Polignac number, because 1189907983 - 2¹ = 1189907981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189907981) 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, 495010 + ... + 497407.

It is an arithmetic number, because the mean of its divisors is an integer number (163748970).

Almost surely, 2^1189907983 is an apocalyptic number.

1189907983 is a deficient number, since it is larger than the sum of its proper divisors (120083777).

1189907983 is a wasteful number, since it uses less digits than its factorization.

1189907983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992537.

The product of its (nonzero) digits is 979776, while the sum is 55.

The square root of 1189907983 is about 34495.0428757525. The cubic root of 1189907983 is about 1059.6711876177.

The spelling of 1189907983 in words is "one billion, one hundred eighty-nine million, nine hundred seven thousand, nine hundred eighty-three".