1189854946 has 12 divisors (see below), whose sum is σ = 2076175638. Its totient is φ = 509937792.

The previous prime is 1189854907. The next prime is 1189855013. The reversal of 1189854946 is 6494589811.

It can be written as a sum of positive squares in only one way, i.e., 1178892225 + 10962721 = 34335^2 + 3311^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6070591 + ... + 6070786.

Almost surely, 2^1189854946 is an apocalyptic number.

1189854946 is a deficient number, since it is larger than the sum of its proper divisors (886320692).

1189854946 is a wasteful number, since it uses less digits than its factorization.

1189854946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12141393 (or 12141386 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 55.

The square root of 1189854946 is about 34494.2741045525. The cubic root of 1189854946 is about 1059.6554433706.

The spelling of 1189854946 in words is "one billion, one hundred eighty-nine million, eight hundred fifty-four thousand, nine hundred forty-six".